Study on thermal stubility of ultra-thin DLC thin films due to rapid laser heating

• Project/Area Number: 24360063
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Design engineering/Machine functional elements/Tribology
• Research Institution: Kansai University
• Principal Investigator: TAGAWA Norio 関西大学, システム理工学部, 教授 (50298840)
• Co-Investigator(Kenkyū-buntansha): TANI Hiroshi 関西大学, システム理工学部, 教授 (40512702)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000); Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2012: ¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
• Keywords: ナノトライボロジー / ＤＬＣ薄膜 / 熱的安定性 / レーザ加熱 / ラマン分光分析 / 超薄膜潤滑膜 / ラマン分析 / 超薄膜液体潤滑膜 / DLC薄膜 / 局所的高速レーザ加熱

Outline of Final Research Achievements

Thermal stability and degradation of DLC thin films and ultra-thin liquid lubricant films on conventional magnetic disk surfaces due to rapid laser heating were investigated, using Raman microscope. The effects of high temperature caused by laser heating and inert gas environments were elucidated experimentally. In addition, we developed a novel plasmon sensor and it became possible to evaluate more detailed Raman spectroscopy analysis using our novel plasmon sensors, by increasing the intensity of Raman scattered light.

Research Products

• [Journal Article] Degradation of Lubricant Film and Carbon Overcoat Subjected to Laser Heating in an Inert Gas Environment in Thermally Assisted Magnetic Recording (2015)
  • Author(s): Norio Tagawa, Hiroshi Tani, Shinji Koganezawa
  • Journal Title: IEEE TRANSACTION ON MAGNETICS Volume: 52 Pages: 1-7
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Degradation of Carbon Overcoat Subjected to Laser Heating in an Inert Gas Environment in Thermally Assisted Magnetic Recording (2014)
  • Author(s): Norio Tagawa, Hiroshi Tani, Shinji Koganezawa
  • Journal Title: IEEE TRANSACTION ON MAGNETICS Volume: 50 Pages: 1-4
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Structural stability of nanometer thick diamond-like carbon films subjected to heating for thermally assisted magnetic recording (2014)
  • Author(s): Norio Tagawa, Hiroshi Tani
  • Journal Title: Microsyst. Technol. Volume: 20 Issue: 8-9 Pages: 1405-1411
  • DOI: 10.1007/s00542-014-2131-x
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] ラマン分光用プラズモンセンサの開発 (2015)
  • Author(s): 細川翔太，谷弘詞，小金沢新治，多川則男
  • Organizer: 日本機械学会関西支部第90期定時総会講演会
  • Place of Presentation: 京都大学（京都）
  • Year and Date: 2015-03-16 – 2015-03-17
• [Presentation] 不活性ガス環境下におけるレーザ照射による潤滑膜の減耗特性 (2014)
  • Author(s): 多川則男, 谷弘詞, 小金沢新治
  • Organizer: トライボロジー会議2014秋盛岡
  • Place of Presentation: アイーナいわて県民情報交流センター（岩手）
  • Year and Date: 2014-11-05 – 2014-11-07
• [Presentation] DEGRADATION OF LUBRICANT FILM AND CARBON OVERCOAT SUBJECTED TO LASER HAEATING IN AN INERT GAS ENVIRONMENT IN THERMALLY ASSISTED MAGNETIC RECOREING (2014)
  • Author(s): Norio Tagawa. Hiroshi Tani, Shinji Koganezawa
  • Organizer: TMRC2014
  • Place of Presentation: Berkeley（アメリカ）
  • Year and Date: 2014-08-11 – 2014-08-14
  • Invited
• [Presentation] 不活性ガス環境下におけるレーザ加熱によるDLC超薄膜の劣化特性 (2014)
  • Author(s): 多川則男, 谷弘詞, 小金沢新治
  • Organizer: トライボロジー会議2014春東京
  • Place of Presentation: 国立オリンピック記念青少年総合センター（東京）
  • Year and Date: 2014-05-19 – 2014-05-21
• [Presentation] Degradation of Carbon Overcoat Subjected to Laser Heating in an Inert Gas Environment in Thermally Assisted Magnetic Recording (2014)
  • Author(s): Norio Tagawa, Hiroshi Tani, Shinji Koganezawa
  • Organizer: INTERMAG 2015 EUROPE
  • Place of Presentation: Dresden（ドイツ）
  • Year and Date: 2014-05-04 – 2014-05-08
• [Presentation] レーザー加熱によるカーボン材料の構造変化に関する研究 (2013)
  • Author(s): 戒能昴行、谷弘詞、小金沢新治、多川則男
  • Organizer: 日本機械学会関西支部第88期定時総会講演会
  • Place of Presentation: 大阪工業大学(大阪)
• [Presentation] レーザ照射による磁気ディスク上潤滑膜の減少量について (2013)
  • Author(s): 岡健吾、谷弘詞、小金沢新治、多川則男
  • Organizer: 日本機械学会IIP2013情報・知能・精密機器部門講演会
  • Place of Presentation: 東洋大学(東京)
• [Presentation] Fundamental Study of Thermal Stability of Nanometer-Thick Diamond-Like Carbon Films for Thermally Assisted Magnetic Recording (2012)
  • Author(s): Norio Tagawa, Hiroshi Tani, Takao Miki
  • Organizer: INTERNATIONAL CONFERENCE ON DIAMOND AND CARBON MATERIALS
  • Place of Presentation: グラナダ(スペイン)
• [Presentation] Structural stability of nanometer-thick diamond-like carbon films due to heating for thermally assisted magnetic recording
  • Author(s): Norio Tagawa, Hiroshi Tani
  • Organizer: ASME 2013 Conference on Information Storage and Processing Systems
  • Place of Presentation: Santa Clara University, Santa Clara, CA USA
• [Presentation] 熱アシスト記録におけるレーザ照射時の潤滑膜減少の環境依存性
  • Author(s): 堀泰裕、多川則男、谷弘詞、小金沢新治
  • Organizer: 日本機械学会関西学生会学生員卒業研究発表講演会
  • Place of Presentation: 大阪府立大学、大阪
• [Presentation] レーザ加熱型ピンオンディスク試験機における加熱温度の同定
  • Author(s): 畑雄介、谷弘詞、多川則男
  • Organizer: 日本機械学会関西学生会学生員卒業研究発表講演会
  • Place of Presentation: 大阪府立大学、大阪
• [Presentation] 不活性ガス環境下におけるレーザ加熱によるDLC超薄膜の劣化特性
  • Author(s): 多川則男、谷弘詞、小金沢新治
  • Organizer: トライボロジー会議２０１４春東京
  • Place of Presentation: 国立オリンピック記念青少年総合センター（東京）