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Ultra High Density Perpendicular Magnetic Recording

Research Project

Project/Area Number 01420030
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field 電子機器工学
Research InstitutionTohoku University

Principal Investigator

NAKAMURA Yoshihisa  Tohoku University, Res. Inst. of Elec. Communi., Professor, 電気通信研究所, 教授 (50006235)

Co-Investigator(Kenkyū-buntansha) YAMAMOTO Setsuo  Tohoku University, Res. Inst. of Elec. Communi., Research Associate, 電気通信研究所, 助手 (30182629)
OUCHI Kazuhiro  Tohoku University, Res. Inst. of Elec. Communi., Professor, 電気通信研究所, 教授 (10006249)
IWASAKI Shun-ichi  Tohoku Institute of Technology, President, 学長 (80006212)
Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥29,700,000 (Direct Cost: ¥29,700,000)
Fiscal Year 1991: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1990: ¥17,400,000 (Direct Cost: ¥17,400,000)
Fiscal Year 1989: ¥10,200,000 (Direct Cost: ¥10,200,000)
KeywordsPerpendicular Magnetic Recording / High Density Recording / Perpendicular Magnetic Head / Perpendicular Magnetic Recording Medium / Perpendicular Magnetic Anisotropy / Sputtering / Sliding Contact Recording / Magnetic Domain / 単磁極ヘッド / ハ-ドディスク / 主磁極 / 垂直磁気記録 / リジッドディスク / スペ-シング / 耐久性 / モジュレ-ション
Research Abstract

The purpose of this study, was to achieve the ideal head/medium system and to pursue the feasibility of ultra high density recording in perpendicular magnetic recording. We developed the following three new technologies in this study :
(a) Magnetic domain control technique using the small notches fabricated at the edge of a main-pole film of a single-pole head. The reproduced voltage of 4OOnV_<o-p>/[mum^*turn^*(m/s)] was obtained using only 2mum trackwidth single-pole head. This reproduced voltage is higher than that of the highly sensitive ring head.
(b) New sputtering target was developed for high rate fabrication of high density perpendicular "magnetic recording media. The new sputtering target enables the confinement of the plasma and low gas pressure and low temperature sputtering. These are convenient features to fabricate magnetically soft enough Ni-Fe backlayer and Co-Cr layer with high perpendicular orientation, high crystallinity and narrower magnetic anisotropy field distribution. We proved that the fabrication of perpendicular magnetic recording tape media for high density recording is possible using this new sputtering target.
(c) Sliding contact recording technology combining the Co-Cr/Ni-Fe hard disk media with smooth surface and non-flying single-pole head supporting mechanism. Sliding contact recording excludes spacing loss, and derives the intrinsic high density recording performance of recording media. The pass wear durability and envelope of the reproduced voltage was drastically improved in this system.
In perpendicular magnetic recording using these new technologies, we achieved the highest -6dB recording density of 6, 700 bits/mm. The error rate of 10^<-9>, which guarantees the practical application as a hard disk drive, was realized at linear bit density of 4, 000 bits/mm and track density of 10 tracks/mm.

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (148 results)

All Other

All Publications (148 results)

  • [Publications] 大内 一弘: "SPTタ-ゲットによる垂直磁気記録媒体における高速作製の効果" 日本応用磁気学会誌. 15. 125-128 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 田河 育也: "磁気記録媒体におけるHk分布と高密度特性の関連" 日本応用磁気学会誌. 15. 155-158 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 小野寺 誠一: "MIGヘッドによるハ-ドディスク垂直磁気記録媒体の記録再生特性" 日本応用磁気学会誌. 15. 163-166 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 伊勢 和幸: "垂直磁気ヘッド主磁極膜の磁区構造制御法" 日本応用磁気学会誌. 15. 167-170 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 山本 節夫: "垂直ハ-ドディスク装置の大容量化のための二、三の検討" 日本応用磁気学会誌. 15. 179-182 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Shunーichi Iwasaki: "Quasiperpendicular Magnetic Recording on a Composite Medium with CoーCr Perpendicular and FeーCo Longiludinal layers" Journal of Applicd Physics. 69. 4739-4741 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yoshihisa Nakamura: "Highly Permeable FeーSiーN Films for a SingleーPole Type Head" Journal of the Magnetics Society of Japan. 15,Supple.91-96 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yonglong: "Feasibility of High ArealーDensity Perpendicular Magnetic Recording Using MultiーTrack Cross Azimuth SPT Head" Journal of The Magnetics Society of Japan. 15,Supple.159-162 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yoshihisa Nakamura: "Effect of Wall Pinning To CoーZrーNb MainーPole Film on Recording Characteristics of Narrow Trck SingleーPole Head" Journal of The Magnetics Society of Japan. 15,Supple.185-190 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yasuo Ando: "A Simmulation for Video Signal Recording on Double Layered Coating Media" Journal of The Magnetics Society of Japan. 15,Supple.215-220 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Kenya Itoh: "Computer Analysis of Overwrite Mechanism in Perpendicular Magnetic Recording" Journal of The Magnetics Society of Japan. 15,Supple.221-226 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Hiroaki Muraoka: "An Error Rate Evaluation of the Narrow Track Single Pole Type Head" Journal of The Magnetics Society of Japan. 15,Supple.281-286 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Seiichi Onodera: "CoーCr Perpendicular Hard Disk Media with Thin FeーCo Backlayer for RingーType Head" Journal of the Magnetics Society of Japan. 15,Supple.287-292 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Setsuo Yamamoto: "High Frequcncy Response of DoubleーLayered Perpendicular Magnetic Recording" Journal of The Magnetics Society of Japan. 15,Supple.293-298 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Masayoshi Shinohara: "Effects of Ti Interlayer in Perpendicular DoubleーLayer Disks and Spacing on Recording Characteristics" Journal of The Magnetics Society of Japan. 15,Supple.383-388 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yasushi Maeda: "Compositional Misrostructures in CoーCr Films for Perpendicular Magnetic Recording" Journal of The Magnetics Society of Japan. 15,Supple.457-462 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yoshihisa Nakamura: "Theoretical and Experimental Prospects of Perpendicular Magnetic Recording" Journal of The Magnetics Society of Japan. 15,Supple.497-506 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Junーichi Tachibana: "Perpendicular Hard Disk Media for Contact SPT Head Recording System" Journal of The Magnetics Society of Japan. 15,Supple.519-524 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Kenーichi Takano: "Narrow Track SingleーPole Type Head" Journal of The Magnetics Society of Japan. 15,Supple.549-554 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Shinya Fujimatsu: "A New Supporting Mechanism for NonーFlying SignalーPole Head" Journal of The Magnetics Society of Japan. 15,Supple.721-726 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Ikuya Tagawa: "Ring Head Recording Mechanisms and Characteristics of Obliquely Oriented Media" Journal of the Magnetics Society of Japan. 15,Supple.827-832 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Shin Okijima: "Conditions for Continuous Sputter Deposition of Flexible CoーCr Double Layer Media by using a New SPT Sputtering Source" Journal of The Magnetics Society of Japan. 15,Supple.909-914 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yoshihisa Nakamura: "New Concepts for Perpendicular Magnetic Recording Hard Disk System" IEEE Transactions on Magnetics. 27. 4555-4560 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Kazuhiro Ouchi: "Properties of Perpendicular Recording Media Continuously Prepared with a New Sputtering Source" IEEE Transactions on Magnetics. 27. 4912-4914 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Kenーichi Takano: "Improvements of Reproducing Sensitivity in SingleーPole Type Perpendicular Magnetic Recording Head" IEEE Transactions on Magnetics. 27. 4927-4929 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Ikuya Tagawa: "Relationship between High Density Recording Performance and Particle Coercivity" IEEE Transaction on Magnetics. 27. 4975-4977 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Setsuo Yamamoto: "High Areal Bit Density Perpendicular Magnetic Recording on Hard Disk" IEEE Transaction on Magnectics. 27. 5292-5294 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 大木島 真: "ロ-ルコ-タ-によるCoーCrテ-プ媒体の連続作製とその記録再生特性" 日本応用磁気学会誌. 16. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 立花 淳一: "高記録分解能CoーCr二層膜ハ-ドディスク媒体の作製" 日本応用磁気学会誌. 16. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 高野 研一: "狭トラック単磁極ヘッドの記録特性" 電子情報通信学会技術研究報告. MR91ー3. 13-18 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 田河 育也: "計算機シミュレ-ションによる斜め配向媒体の記録機構・記録特性の解析" 電子情報通信学会技術研究報告. MR91ー6. 9-16 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Ikuya Tagawa: "Comparison between Longitudinal and Perpendicular Magnetic Recording and Reproduce Mechanism" 電子情報通信学会技術研究報告. MR91ー48. (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Hiroaki Muraoka: "An Analysis on Narrow Track Perpendicular Magnetic Recording System" 電子情報通信学会技術研究報告. MR91ー49. 1-6 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 岡山 睦之: "ディジタル磁気記録の非線形性に関する一考察" 平成3年度電気関係学会東北支部連合大会. 2F2. 236 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 藤井 秀之: "垂直磁気記録媒体用フェライト基板の検討" 平成3年度電気関係学会東北支部連合大会. 2F3. 237 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 清水 幸之: "垂直配向記録媒体における片MIGヘッド走行方向依存性の解析" 平成3年度電気関係学会東北支部連合大会. 2F4. 238 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 小田切 充: "記録再生分離形垂直磁気ヘッドの検討" 平成3年度電気関係学会東北支部連合大会. 2F5. 239 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 西山 靖孝: "CoーCr/FeーNiーNb二層膜垂直媒体のノイズ特性" 平成3年度電気関係学会東北支部連合大会. 2F6. 240 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 伊藤 研也: "垂直磁気記録におけるオ-バ-ライト機構の検討" 1991年電子情報通信学会秋季大会講演論文集. Cー306. 20 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 安藤 康夫: "表面垂直配向重層塗布型媒体における重疂波形記録シミュレ-ション解析" 1991年電子情報通信学会秋季大会講演論文集. Cー307. 21 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 伊勢 和幸: "2μm幅インダクティブ形単磁極ヘッドの記録特性" 1991年電子情報通信学会秋季大会講演論文集. Cー310. 24 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 藤松 慎也: "非浮上形単磁極ヘッドの新しい支持方式ー平衡型ー" 1991年電子情報通信学会秋季大会講演論文集. Cー312. 26 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 藤松 慎也: "単磁極ヘッドの低浮上・安定走行化の一検討" 1992年電子情報通信学会春期大会講演論文集. Cー426. 46 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 田河 育也: "磁気記録の計算機シミュレ-ションと相反定理" 1992年電子情報通信学会春期大会講演論文集. Cー436. 56 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 伊勢 和幸: "ノッチ付き主磁極膜の磁化挙動と垂直磁気記録特性" 1992年電子情報通信学会春期大会講演論文集. Cー437. 57 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 海津 明政: "斜め磁化容易な主磁極膜を用いた単磁極ヘッドの記録再生特性" 1992年電子情報通信学会春期大会講演論文集. Cー438. 58 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 梅原 敏雄: "FeーSiーN膜を主磁極とする単磁極ヘッドの低ノイズ化の検討" 1992年電子情報通信学会春期大会講演論文集. Cー439. 59 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 村岡 裕明: "記録再生分離形単磁極ヘッドによる垂直磁気記録の高線密度記録再生" 1992年電子情報通信学会春期大会講演論文集. Cー440. 60-61 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 大木島 真: "CoーCr/NiーFe二層膜媒体における裏打ち層薄膜化の影響" 1992年電子情報通信学会春期大会講演論文集. Cー444. 65 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 藤井 秀夫: "垂直磁気記録用二層膜ハ-ドディスク媒体におけるCoーCr記録層の検討" 1992年電子情報通信学会春期大会講演論文集. Cー445. 66 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 立花 淳一: "CoーCrーTa二層膜垂直磁気ハ-ドディスクの高出力化の検討" 1992年電子情報通信学会春期大学講演論文集. Cー446. 67 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 伊藤 研也: "垂直磁気記録におけるオ-バ-ライト特性の記録密度依存性" 1992年電子情報通信学会春期大会講演論文集. Cー447. 68 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 西田 靖孝: "複合主磁極型単磁極ヘッドを用いたパ-シャルレスポンス方式の検討" 1992年電子情報通信学会春期大会講演論文集. Cー449. 70 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Ikuya Tagawa: "Reciprocity in Computer Simulation of Magnetic Reproduction Process" International Magnetics Conference (INTERMAG '92). FAー06. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Hiroaki Muraoka: "An Analysis on Media Noise of CoーCr DoubleーLayered Film in Perpendicular Magnetic Recording" International Conference on Magnetic Recording Media (MRM '92). Cー14. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Setsuo Yamamoto: "Continuous Fabrication of CoーCr Perpendicular Magnetic Recording Tape" International Conference on Magnetic Recording Media(MRM '92). Cー27. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yoshihisa Nakamura: "Flexible Magnetic Disk Image File System Using Perpendicular Magnetic Recording" IEEE Transactions on Magnetics. 25. 3372-3374 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] Yoshihisa Nakamura: "An Analysis of Perpendicular Magnetic Recording Using a NewlyーDeveloped 2DーFEM Combined with a Medium Magnetization Model" IEEE Transactions on Magnetics. 25. 4159-4161 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] Hisashi Takano: "Read/Write Characteristics of a SingleーPole Head Using FeーC/NiーFe Multilayered Film" Journal of Applied Physics. 66. 4345-4349 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] Junsaku Nakajima: "Preparation Method of CoーCr Perpendicular Magnetic Recording Media by Continuous Sputtering" IEEE Translation Journal on Magnetics in Japan. 4. 703-716 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 山本 節夫: "主磁極励磁形垂直磁気ヘッドの記録再生効率" 日本応用磁気学会誌. 13. 113-116 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 西村 浩介: "垂直磁気記録特性の近似解法" 日本応用磁気学会誌. 13. 141-144 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] Yoshihisa Nakamura: "Flexible Magnetic Disk Image File System Using Perpendicular Magnetic Recording" IEEE Transactions on Magnetics. 25. 3372-3374 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] Yoshihisa Nakamura: "An Analysis of Perpendicular Magnetic Recording Using a NewlyーDeveloped 2DーFEM Combined with a Medium Magnetization Model" IEEE Transactions on Magnetics. 25. 4159-4161 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] Hisashi Takano: "Read/Write Characteristics of a SingleーPole Head Using FeーC/NiーFe Multilayered Film" Journal of Applied Physics. 66. 4345-4349 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] Junsaku Nakajima: "Preparation Method of CoーCr Perpendicular Magnetic Recording Media by Continuous Sputtering" IEEE Translation Journal on Magnetics in Japan. 4. 703-716 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 山本 節夫: "主磁極励磁形垂直磁気ヘッドの記録再生効率" 日本応用磁気学会誌. 13. 113-116 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 西村 浩介: "垂直磁気記録特性の近似解法" 日本応用磁気学会誌. 13. 141-144 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 田河 育也: "磁化モデルを組み込んだ有限要素法による単磁極ヘッド・二層膜媒体間磁気的相互作用の解析" 日本応用磁気学会誌. 13. 145-148 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 田所 茂: "垂直磁気記録媒体の軟磁性裏打層の磁気特性と記録再生時の挙動" 日本応用磁気学会誌. 13. 149-152 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 中村 慶久: "磁気記録媒体の磁化モデル" 日本応用磁気学会誌. 13. 610-615 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] Kazuhiro Ouchi: "Properties,Preparation,Advances and Limitations of Materials and Media for Perpendicular Recording" IEEE Transactions on Magnetics. 26. 24-29 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Shunーichi Iwasaki: "On Design of CoーCr Perpendicular Recording Media for Usage of a RingーType Head" IEEE Transactions on Magnetics. 26. 97-99 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 大内 一弘: "垂直磁気記録媒体連続作製用タ-ゲットの構造と媒体の特性" 日本応用磁気学会誌. 14. 65-68 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 田河 育也: "媒体の異方性磁界ベクトル分布と記録再生特性ー三次元磁化モデルを用いたFEMシミュレ-ションー" 日本応用磁気学会誌. 14. 123-126 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 山本 節夫: "垂直磁気記録におけるマルチトラック記録の可能性について" 日本応用磁気学会誌. 14. 127-130 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 中村 慶久: "非浮上形単磁極ヘッドによる垂直磁気リジッドディスクの評価" 日本応用磁気学会誌. 14. 135-138 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 中村 慶久: "超高密度磁気記録" 日本応用磁気学会誌. 14. 593-601 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Yoshihisa Nakamura: "Recording Characteristics of Perpendicular Magnetic Recording Hard Disk Measured by NonーFlying SingleーPole Head" IEEE Transactions on Magnetics. 26. 2436-2438 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 中村 慶久: "垂直磁気記録の進展ー画像記録への応用ー" テレビジョン学会誌. 44. 139-146 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 田所 茂: "CoーCr層のMーH曲線角形比と2層膜媒体の性能" 電子情報通信学会技術研究報告. MR89ー1. 1-8 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 福岡 引継: "非浮上型磁気ヘッドによるリジッド垂直磁気ディスクの評価" 電子情報通信学会技術研究報告. MR89ー4. 1-7 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 中三川 順一: "FeーNiーNb膜を裏打ち層とした垂直リジッド磁気ディスクの非浮上型単磁極ヘッドによる評価" 平成元年度電気関係学会東北支部連合大会講演論文集. 1Gー1. 225 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 高野 研一: "薄膜コイルを有する主磁極励磁型単磁極ヘッド" 平成元年度電気関係学会東北支部連合大会講演論文集. 1Gー2. 226 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 田河 育也: "三次元磁化モデルを組み込んだ二次元有限要素法シミュレ-ション" 平成元年度電気関係学会東北支部連合大会講演論文集. 1Gー3. 227 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 中村 慶久: "垂直磁気記録方式による画像のディジタル記録実験" 平成元年度電気関係学会東北支部連合大会講演論文集. 1Gー4. 228 (1989)

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      1990 Annual Research Report
  • [Publications] 石黒 秀之: "垂直磁気記録媒体の連続作製に用いる改良スパッタタ-ゲット" 平成元年度電気関係学会東北支部連合大会講演論文集. 1Gー6. 230 (1989)

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      1990 Annual Research Report
  • [Publications] 伴 泰明: "垂直磁気ヘッド用FeーSiーN薄膜の磁気特性と熱安定性" 平成元年度電気関係学会東北支部連合大会講演論文集. 1Gー8. 232 (1989)

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      1990 Annual Research Report
  • [Publications] 大内 一弘: "垂直磁気記録媒体連続作製用タ-ゲットの構造と媒体の特性" 第13回日本応用磁気学会学術講演会概要集. 24aAー9. 285 (1989)

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      1990 Annual Research Report
  • [Publications] 田河 育也: "媒体の配向性と記録再生特性ー三次元磁化モデルを用いたFEMシミュレ-ションー" 第13回日本応用磁気学会学術講演会概要集. 25aAー9. 441 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 山本 節夫: "マルチトラックを利用した垂直磁気記録方式についての一検討" 第13回日本応用磁気学会学術講演会概要集. 25pAー1. 442 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 中村 慶久: "非浮上形単磁極ヘッドによるリジッド垂直磁気ディスクの評価" 第13回日本応用磁気学会学術講演会概要集. 25pAー5. 446 (1989)

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      1990 Annual Research Report
  • [Publications] 大内 一弘: "新しいタ-ゲットによるCoーCr垂直磁気記録媒体の高速作成とその磁気特性" 1990年電子情報通信学会春季全国大会講演論文集. Cー458. 22 (1990)

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      1990 Annual Research Report
  • [Publications] 田河 育也: "磁気記録用媒体の異方性磁界分布の測定法" 1990年電子情報通信学会春季全国大会講演論文集. Cー459. 23 (1990)

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      1990 Annual Research Report
  • [Publications] 小野寺 誠一: "MRヘッドの垂直磁気記録ハ-ドディスクへの応用に関する研究" 1990年電子情報通信学会春季全国大会講演論文集. Cー470. 34 (1990)

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      1990 Annual Research Report
  • [Publications] 大内 一弘: "極薄膜裏打ち層を持つリングヘッド用二層膜垂直磁気記録媒体の検討" 1990年電子情報通信学会春季全国大会講演論文集. Cー481. 45 (1990)

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      1990 Annual Research Report
  • [Publications] 中三川 順一: "非浮上形単磁極ヘッドによる垂直磁気記録用ハ-ドディスクの裏打ち軟磁性層の検討" 1990年電子情報通信学会春季全国大会講演論文集. Cー482. 46 (1990)

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      1990 Annual Research Report
  • [Publications] 中村 慶久: "垂直磁気記録用リジッドディスクにおけるスペ-シングの影響" 1990年電子情報通信学会春季全国大会講演論文集. Cー483. 47 (1990)

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      1990 Annual Research Report
  • [Publications] 中村 慶久: "非浮上形単磁極ヘッドによる垂直磁気リジッドディスクへのカラ-画像記録実験" 1990年電子情報通信学会春季全国大会講演論文集. Cー488. 52 (1990)

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      1990 Annual Research Report
  • [Publications] 高野 研一: "単磁極形垂直磁気ヘッドの高感度化" 1990年電子情報通信学会春季全国大会講演論文集. SCー5ー4. 287-288 (1990)

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      1990 Annual Research Report
  • [Publications] 田河 育也: "計算機シミュレ-ションから見た超高密度垂直磁気記録用媒体" 電子情報通信学会技術研究報告. MR90ー13. 23-30 (1990)

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      1990 Annual Research Report
  • [Publications] 山本 節夫: "非浮上形単磁極ヘッドを用いた垂直磁気リジッドディスク装置の検討" 電子情報通信学会技術研究報告. MR90ー14. 31-38 (1990)

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  • [Publications] 大内 一弘: "スパッタによる二層膜垂直磁気記録媒体の高速作製と記録再生特性" 平成2年度電気関係学会東北支部連合大会講演論文集. 2F1. 183 (1990)

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      1990 Annual Research Report
  • [Publications] 田河 育也: "計算機シミュレ-ションによる長手薄膜媒体と垂直二層膜媒体の比較" 平成2年度電気関係学会東北支部連合大会講演論文集. 2F2. 184 (1990)

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      1990 Annual Research Report
  • [Publications] 伊藤 研也: "垂直磁気記録におけるオ-バ-ライトの計算機シミュレ-ション" 平成2年度電気関係学会東北支部連合大会講演論文集. 2F3. 185 (1990)

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      1990 Annual Research Report
  • [Publications] 藤村 篤史: "垂直磁気記録二層膜媒体における再生出力のエンベロ-プ変動の原因" 平成2年度電気関係学会東北支部連合大会講演論文集. 2F4. 186 (1990)

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      1990 Annual Research Report
  • [Publications] 大内 一弘: "非浮上リングヘッド・ハ-ドディスク系における二層垂直媒体の記録特性" 平成2年度電気関係学会東北支部連合大会講演論文集. 2F5. 187 (1990)

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      1990 Annual Research Report
  • [Publications] 高野 研一: "単磁極ヘッドのコア構造の検討" 平成2年度電気関係学会東北支部連合大会講演論文集. 2F6. 188 (1990)

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      1990 Annual Research Report
  • [Publications] 伴 泰明: "FeーSiーN薄膜を主磁極とする単磁極ヘッドの再生出力" 平成2年度電気関係学会東北支部連合大会講演論文集. 2F7. 189 (1990)

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      1990 Annual Research Report
  • [Publications] 趙 永龍: "垂直磁気アジマス記録方式の検討" 平成2年度電気関係学会東北支部連合大会講演論文集. 2F8. 190 (1990)

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  • [Publications] 伊勢 和幸: "単磁極型垂直磁気ヘッド主磁極膜の磁区構造制御の一方法" 平成2年度電気関係学会東北支部連合大会講演論文集. 2F9. 191 (1990)

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  • [Publications] 藤村 篤史: "垂直磁気記録二層膜媒体の裏打ち層の効果の一評価法" 1990年電子情報通信学会秋季全国大会講演論文集. Cー344. 12 (1990)

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      1990 Annual Research Report
  • [Publications] 山本 節夫: "非浮上形単磁極ヘッドを用いた垂直磁気ハ-ドディスク装置のヘッド・媒体間インタ-フェ-スについての検討" 1990年電子情報通信学会秋季全国大会講演論文集. SCー5ー1. 268-269 (1990)

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      1990 Annual Research Report
  • [Publications] 高野 研一: "単磁極ヘッドの構造の検討" 1990年電子情報通信学会秋季全国大会講演論文集. SCー5ー2. 270-271 (1990)

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      1990 Annual Research Report
  • [Publications] 田河 育也: "磁気記録媒体におけるHk分布と高密度特性の関連" 第14回日本応用磁気学会学術講演会概要集. 10aBー5. 254 (1990)

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      1990 Annual Research Report
  • [Publications] 大内 一弘: "SPTタ-ゲットによる垂直磁気記録媒体における高速作製の効果" 第14回日本応用磁気学会学術講演会概要集. 10aBー6. 266 (1990)

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      1990 Annual Research Report
  • [Publications] 小野寺 誠一: "MIGヘッドによる垂直磁気記録ハ-ドディスクの記録再生特性の測定" 第14回日本応用磁気学会学術講演会概要集. 10pBー11. 271 (1990)

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      1990 Annual Research Report
  • [Publications] 伊勢 和幸: "垂直磁気ヘッド1主磁極膜の磁区構造制御法" 第14回日本応用磁気学会学術講演会概要集. 10pBー13. 273 (1990)

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      1990 Annual Research Report
  • [Publications] 伴 泰明: "FeーSi系薄膜を主磁極膜とする単磁極ヘッドの記録再生特性" 第14回日本応用磁気学会学術講演会概要集. 10pBー15. 275 (1990)

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      1990 Annual Research Report
  • [Publications] 山本 節夫: "垂直ハ-ドディスク装置の大容量化のための二、三の検討" 第14回日本応用磁気学会学術講演会概要集. 10pBー17. 277 (1990)

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      1990 Annual Research Report
  • [Publications] 趙 永龍: "垂直磁気記録用交差アジマスマルチトラック単磁極ヘッドの検討" 1991年電子情報通信学会春季全国大会講演論文集. Cー421. (1991)

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      1990 Annual Research Report
  • [Publications] 伴 泰明: "FeーSiーN薄膜を主磁極膜とする単磁極ヘッドのノイズ" 1991年電子情報通信学会春季全国大会講演論文集. Cー425.

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      1990 Annual Research Report
  • [Publications] 大内 一弘: "SPTタ-ゲットによるCoーCr記録媒体連続作製時における防着マスクの影響" 1991年電子情報通信学会春季全国大会講演論文集. Cー429. (1991)

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      1990 Annual Research Report
  • [Publications] 小野寺 誠一: "FeーCo裏打ち層を持つCoCr垂直磁気記録ハ-ドディスク媒体におけるスペ-シングの影響" 1991年電子情報通信学会春季全国大会講演論文集. Cー431. (1991)

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      1990 Annual Research Report
  • [Publications] 藤村 篤史: "垂直磁気記録二層膜媒体における裏打ち層の高周波応答" 1991年電子情報通信学会春季全国大会講演論文集. Cー432. (1991)

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      1990 Annual Research Report
  • [Publications] 伊藤 研也: "計算機シミュレ-ションによる磁気記録オ-バ-ライト機構の解析" 1991年電子情報通信学会春季全国大会講演論文集. Cー435. (1991)

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      1990 Annual Research Report
  • [Publications] 田河 育也: "磁気記録特性の配向方向依存性に関するシミュレ-ション解析" 1991年電子情報通信学会春季全国大会講演論文集. Cー437. (1991)

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      1990 Annual Research Report
  • [Publications] 安藤 泰夫: "重層塗布型媒体における重畳波形記録再生シミュレ-ション" 1991年電子情報通信学会春季全国大会講演論文集. Cー438. (1991)

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      1990 Annual Research Report
  • [Publications] 岡山 睦之: "帯域制限ディジタル記録の計算機解析" 1991年電子情報通信学会春季全国大会講演論文集. Cー439. (1991)

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      1990 Annual Research Report
  • [Publications] 山本 節夫: "垂直磁気ディスクドライブにおけるエラ-レ-トの検討" 1991年電子情報通信学会春季全国大会講演論文集. Cー444. (1991)

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      1990 Annual Research Report
  • [Publications] 藤松 慎也: "リニアベアリングを用いた非浮上型単磁極ヘッドの支持方式" 1991年電子情報通信学会春季全国大会講演論文集. Cー452. (1991)

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      1990 Annual Research Report
  • [Publications] 高野 研一: "垂直磁気記録における高トラック密度化" 1991年電子情報通信学会春季全国大会講演論文集. SCー5ー4. (1991)

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      1990 Annual Research Report
  • [Publications] S.Iwasaki: "Co-Cr COMPOSITE MEDIA INTENDED FOR PERPENDICULAR MAGNETIC RECORDING BY USING ARING-TYPE HEAD" Journal of The Magnetics Society of Japan. 13,Suppl.21-26 (1989)

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  • [Publications] I.Tagawa: "COMPUTER SIMULATION OF MAGNETIC RECORDING" Journal of The Magnetics Society of Japan. 13,Suppl.97-101 (1989)

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      1989 Annual Research Report
  • [Publications] K.Nishimura: "GRAPHICAL ANALYSIS OF PERPENDIUCLAR MAGNETIC RECORDING CHARACTERISTICS" Journal of The Magnetics Socienty of Japan. 13.Suppl.103-108 (1989)

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      1989 Annual Research Report
  • [Publications] S.Yamamoto: "AN IMAGE FILE SYSTEM USING PERPENDICULAR MAGNETIC RECORDING" Journal of The Magnetics Society of Japan. 13,Suppl.273-278 (1989)

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      1989 Annual Research Report
  • [Publications] Y.Nakamura: "EFFECT OF DOMAIN CONTROL OF MAIN-PILE FILM ON PERFORMANCES OF SINGLE-POLE HEAD" Journal of The Magnetics Society of Japan. 13,Suppl.593-598 (1989)

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      1989 Annual Research Report
  • [Publications] Y.Nakamura: "Fe-Si/SiO_2 AND Fe-Si-N/SiO_2 MULTILAYER FILM FOR SINGLE-POLE TYPE PERPENDICULAR MAGNETIC RECORDING HEAD" Journal of The Magnetics Society of Japan. 13,Suppl.729-734 (1989)

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  • [Publications] Y.Nakamura: "Flexible Magnetic Disk Image File System Using Perpendicular Magnetic Recording" IEEE Trans.on Magn.MAGー25. 3372-3374 (1989)

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      1989 Annual Research Report
  • [Publications] Y.Nakamura: "An Analysis of Perpendicular Magnetic Recotding Using a Newly Developed 2D-FEM Combined with a Medium Magnetization Model" IEEE Trans.on Magn.MAGー25. 4159-4161 (1989)

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      1989 Annual Research Report
  • [Publications] 山本節夫: "主磁極励磁形垂直磁気ヘッドの記録再生効率" 日本応用磁気学会誌. 13. 113-116 (1989)

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      1989 Annual Research Report
  • [Publications] 田所茂: "垂直磁気記録媒体の軟磁性裏打層の磁気特性と記録再生時の挙動" 日本応用磁気学会誌. 13. 149-152 (1989)

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      1989 Annual Research Report
  • [Publications] 田河育也: "磁化モデルを組み込んだ有限要素法による単磁極ヘッド・二層膜媒体間磁気的相互作用の解析" 日本応用磁気学会誌. 13. 145-148 (1989)

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      1989 Annual Research Report
  • [Publications] 西村浩介: "垂直磁気記録特性の近似解析法" 日本応用磁気学会誌. 13. 141-144 (1989)

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  • [Publications] 中村慶久: "磁気記録媒体のモデル" 日本応用磁気学会誌. 13. 610-615 (1989)

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      1989 Annual Research Report
  • [Publications] 田河育也: "媒体の異方性磁界ベクトル分布と記録再生特性ー三次元磁化モデルを用いたFEMシミュレ-ションー" 日本応用磁気学会誌. 14. (1999)

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      1989 Annual Research Report
  • [Publications] 山本節夫: "垂直磁気記録におけるマルチトラック記録の可能性について" 日本応用磁気学会誌. 14. (1990)

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      1989 Annual Research Report
  • [Publications] 大内一弘: "垂直記録媒体連続作成用タ-ゲットの構造と媒体の特性" 日本応用磁気学会誌. 14. (1990)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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