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Development of d-electron based phase change chalcogenide for next generation non-volatile memory

Research Project

Project/Area Number 18H02053
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
Research InstitutionTohoku University

Principal Investigator

Sutou Yuji  東北大学, 工学研究科, 教授 (80375196)

Co-Investigator(Kenkyū-buntansha) 齊藤 雄太  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 主任研究員 (50738052)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2019: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2018: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Keywords相変化メモリ / 不揮発性メモリ / アモルファス / 結晶化 / 結晶多形転移 / アモルファス化 / 相変化材料 / 光電子分光 / 局所構造 / 結晶 / 相転移 / 伝導機構
Outline of Final Research Achievements

In this study, we focused on next-generation memory: phase-change memory which relies on the change in physical properties due to amorphous/crystalline phase change of phase-change material (PCM). We tried to develop new PCMs which can enhance phase-change memory performance. In transition-metal containing PCMs which enable lower energy-, faster speed-operation and higher heat resistance than conventional PCMs, transition-metal elements were found to form nano-clusters in the amorphous phase. The volume fraction of nano-clusters decreased with phase-change, which induces the drastic change in electrical properties. It was also found that the addition of nitrogen can suppress the formation of nano-clusters and control the electrical characteristics. Furthermore, we found a crystalline polymorphic PCM which does not require amorphization. The crystalline polymorphic phase-change material can realize phase-change memory showing ultralow energy- and ultrafast speed-operation.

Academic Significance and Societal Importance of the Research Achievements

Society5.0に向け、膨大なデータを保管する不揮発性メモリの高性能化が強く求められている。現在主流の不揮発性メモリはその動作原理故に、その性能向上は限界に達しつつある。それ故、新メモリが世界中で研究開発されているが、中でも相変化メモリは、材料の相変化に伴う抵抗変化を利用してデータ記録する単純な動作原理を持つ。本研究では相変化メモリの革新に向け、従来性能を凌駕する新材料を創成し、その相変化挙動の解明に取り組んだ。相変化材料中の遷移金属元素の重要な役割を明らかにすると共に、省エネ、高速動作かつ高耐熱性を可能とする相変化メモリを実現する事に成功し、学術的にも工業的にも意義の高い成果を得た。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (79 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (5 results) Journal Article (27 results) (of which Int'l Joint Research: 11 results,  Peer Reviewed: 16 results,  Open Access: 7 results) Presentation (47 results) (of which Int'l Joint Research: 8 results,  Invited: 9 results)

  • [Int'l Joint Research] Hangyang University(韓国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Herzen State Pedagogical University(ロシア連邦)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Hanyang University(韓国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Herzen State Pedagogical University(ロシア連邦)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Hanyang大学(韓国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Dimensional transformation of chemical bonding during crystallization in a layered chalcogenide material2021

    • Author(s)
      Y. Saito, S. Hatayama, Y. Shuang, P. Fons, A.V. Kolobov, Y. Sutou
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 1-1

    • DOI

      10.1038/s41598-020-80301-5

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Thermal stability and polymorphic transformation kinetics in β-MnTe films deposited via radiofrequency magnetron sputtering2021

    • Author(s)
      S.Mori, S. Hatayama, D. Ando, Y. Sutou
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: 4 Pages: 045504-045504

    • DOI

      10.35848/1347-4065/abee03

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Temperature-Dependent Electronic Transport in Non-Bulk-Resistance-Variation Nitrogen-Doped Cr2Ge2Te6 Phase-Change Material2021

    • Author(s)
      Y. SHuang, S. Hatayama, D. Ando, Y. Sutou
    • Journal Title

      Physica Status Solidi - Rapid Research Letters

      Volume: 15 Issue: 3 Pages: 2000415-2000415

    • DOI

      10.1002/pssr.202000415

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High Contact Resistivity Enabling Low-Energy Operation in Cr2Ge2Te6-Based Phase-Change Random Access Memory2021

    • Author(s)
      S. Hatayama, Y. Abe, D. Ando, Y. Sutou
    • Journal Title

      Physica Status Solidi - Rapid Research Letters

      Volume: 15 Issue: 3

    • DOI

      10.1002/pssr.202000392

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sequential two-stage displacive transformation from β to α via β′ phase in polymorphic MnTe film2020

    • Author(s)
      S. Mori, D. Andi, Y. Sutou
    • Journal Title

      Materials and Design

      Volume: 196 Pages: 109141-109141

    • DOI

      10.1016/j.matdes.2020.109141

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The importance of contacts in Cu2GeTe3 phase change memory devices2020

    • Author(s)
      S. SHindo, Y. Shuang, S. Hatayama, Y. Saito, P. Fons, A.V. Kolobov, K. Kobayaashi, Y. Sutou
    • Journal Title

      Journal of Applied Physics

      Volume: 128 Issue: 16

    • DOI

      10.1063/5.0019269

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mixed-conduction mechanism of Cr2Ge2Te6 film enabling positive temperature dependence of electrical conductivity and seebeck coefficient2020

    • Author(s)
      S. Hatayama, Y. Yagi, Y. Sutou
    • Journal Title

      Results in Physics

      Volume: 8 Pages: 100155-100155

    • DOI

      10.1016/j.rinma.2020.100155

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nitrogen doping-induced local structure change in a Cr2Ge2Te6 inverse resistance phase-change material2020

    • Author(s)
      Y. Shuang, S. Hatayama, H. Tanimura, D. Ando, T. Ichitsubo, Y. Sutou
    • Journal Title

      Materials Advances

      Volume: 1 Issue: 7 Pages: 2426-2432

    • DOI

      10.1039/d0ma00554a

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] eversible displacive transformation in MnTe polymorphic semiconductor2020

    • Author(s)
      S. Mori, S. Hatayama, Y. Shuang, D. Ando, Y. Sutou
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 85-85

    • DOI

      10.1038/s41467-019-13747-5

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Bidirectional Selector Utilizing Hybrid Diodes for PCRAM Applications2019

    • Author(s)
      Y. Shuang, S. Hatayama, J. An, J. Hong,, D. Ando.,Y.H. Song,, Y. Sutou
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 20209-20209

    • DOI

      10.1038/s41598-019-56768-2

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cr-Triggered Local Structural Change in Cr2Ge2Te6 Phase Change Material2019

    • Author(s)
      S. Hatayama, Y. Shuang, P. Fons, Y. Saito, A.V. Kolobov, K. Kobayashi, S. Shindo, D. Ando, Y. Sutou
    • Journal Title

      ACS Applied Materials and Interfaces

      Volume: 11 Issue: 46 Pages: 43320-43329

    • DOI

      10.1021/acsami.9b11535

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Relation between density and optical contrasts upon crystallization in Cr2Ge2Te6 phase-change material: Coexistence of a positive optical contrast and a negative density contrast2019

    • Author(s)
      S. Hatayama, D. Ando, Y. Sutou
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 52 Issue: 32 Pages: 325111-325111

    • DOI

      10.1088/1361-6463/ab233f

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electrical transport mechanism of the amorphous phase in Cr2Ge2Te6 phase change material2019

    • Author(s)
      S. Hatayama, Y. Sutou, D. Ando, J. Koike and K. Kobayashi
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 52 Issue: 10 Pages: 105103-105109

    • DOI

      10.1088/1361-6463/aafa94

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Systematic materials design for phase-change memory with small density changes for high-endurance non-volatile memory applications2019

    • Author(s)
      Y. Saito, S. Hatayama, Y. Shuang, S. Shindo, P. Fons, A.V. Kolobov, K. Kobayashi, Y. Sutou
    • Journal Title

      Applied Physics Express

      Volume: 12 Issue: 5 Pages: 051008-051008

    • DOI

      10.7567/1882-0786/ab1301

    • NAID

      210000155693

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Structral change by annealing in sputtered MnTe film2019

    • Author(s)
      S. Mori, D. Ando, Y. Sutou
    • Journal Title

      E\PCOS2019 Proceedings

      Volume: 1 Pages: 138-139

    • Related Report
      2019 Annual Research Report
  • [Journal Article] PN Diode Properties of N-type Oxide/p-type N-doped Cr2Ge2Te6 and Its Application for Slf-selective PCRAM2019

    • Author(s)
      Y. Shuang, S. Hatayama, J. Seop, J.P. Hong, D. Ando, Y.H. Song, Y. Sutou
    • Journal Title

      E\PCOS2019 Proceedings

      Volume: 1 Pages: 81-82

    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Journal Article] Conduction mechanism of sputtered amorphous Cr2Ge2Te6 film2019

    • Author(s)
      S. Hatayama, D. Ando, K. Kobayashi, Y. Sutou
    • Journal Title

      E\PCOS2019 Proceedings

      Volume: 1 Pages: 24-25

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Local structural change in Cr2Ge2Te6 phase change material, including abnormal phase change behavior2019

    • Author(s)
      S. Hatayama, Y. Shunag, P. Fons, Y. Saito, A.V. Kolovov, K. Kobayashi, D. Ando, Y. Sutou
    • Journal Title

      Proceedings of PCOS2019

      Volume: 1 Pages: 74-77

    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Journal Article] Resistive switching in MnTe film2019

    • Author(s)
      S. Mori, D. Ando, Y. Sutou
    • Journal Title

      Proceedings of PCOS2019

      Volume: 1 Pages: 85-86

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Diode chracteristics of MnTe/Oxide stack structure2019

    • Author(s)
      M. Kim, S. Mori, D. Adno, Y. Sutou
    • Journal Title

      Proceedings of PCOS2019

      Volume: 1 Pages: 87-88

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Dependence of electrode size on operation energy in Cu2GeTe3 phase change memory2019

    • Author(s)
      T. Iijima, S. Hatayama, Y. Shuang, S. Mori, J.S. An, Y.H. Song, D. Ando, Y. Sutou
    • Journal Title

      Proceedings of PCOS2019

      Volume: 1 Pages: 99-100

    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Journal Article] Electrical transport mechanism of the amorphous phase in Cr2Ge2Te6 phase change material2019

    • Author(s)
      S. Hatayama, Y.Sutou, D. Ando, J. Koike, K. Kobayashi
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 52

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crystallization mechanism and kinetics of Cr2Ge2Te6 phase change material2018

    • Author(s)
      S. Hatayama, Y. Sutou, D. Ando, J. Koike
    • Journal Title

      MRS Communications

      Volume: 8 Issue: 3 Pages: 1167-1172

    • DOI

      10.1557/mrc.2018.176

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Phase change behavior of non-bulk resistance change N-doped Cr2Ge2Te6 phase change material2018

    • Author(s)
      Y. Shuang, S. Hatayama, Y. Sutou, D. Ando, J. Koike, H. Tanimura, T. Ichitsubo
    • Journal Title

      Proceedings of European Phase Change and Ovonic Symposium

      Volume: 1 Pages: 143-144

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Crystallization linetics of inverse resistance change Cr2Ge2Te62018

    • Author(s)
      S. Hatayama, Y. Sutou, D. Ando, J. Koike
    • Journal Title

      Proceedings of European Phase Change and Ovonic Symposium

      Volume: 1 Pages: 131-132

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Non-isothermal crystallization kinetics of amorphous Cr2Ge2Te6 film2018

    • Author(s)
      S. Hatayama, Y. Sutou, D. Ando, J. Koike
    • Journal Title

      Proceedings of Phase Change Oriented Science

      Volume: 1 Pages: 75-76

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Cr2Ge2Te6-based PCRAM showing low resistance amorphous and high resistance cyrtsalline states2018

    • Author(s)
      S. Hatayama, Y. Sutou, D. Ando, J. Koike
    • Journal Title

      IECE Technical Report

      Volume: 118 Pages: 21-26

    • Related Report
      2018 Annual Research Report
  • [Presentation] Cr2Ge2Te6メモリデバイスの動作エネルギーに及ぼすコンタクト抵抗の影響2021

    • Author(s)
      畑山祥吾,阿部泰寛,安藤大輔,須藤祐司
    • Organizer
      日本金属学会春期講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 機械的拘束下におけるMnTe薄膜のβ→α多形変化メカニズム2021

    • Author(s)
      森竣祐,安藤大輔,須藤祐司
    • Organizer
      日本金属学会春期講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 省エネ・高速化に向けた新相変化メモリ材料開発2021

    • Author(s)
      須藤祐司,畑山祥吾,森竣祐,SHUANG YI
    • Organizer
      応用物理学会春期講演大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 不揮発性メモリ用逆抵抗変化型相変化材料の開発2021

    • Author(s)
      畑山祥吾,須藤祐司
    • Organizer
      応用物理学会春期講演大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 原子変位によるMnTe薄膜のβ→α多形変化2021

    • Author(s)
      森竣祐,安藤大輔,須藤祐司
    • Organizer
      応用物理学会春期講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 相変化メモリ材料の研究開発動向2020

    • Author(s)
      須藤祐司,畑山祥吾,森竣祐、SHUANG YI
    • Organizer
      薄膜・表面物理セミナー「ニューロデバイスに向けた最新メモリデバイス・薄膜材料技術」
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Conduction Mechanism in Nitrogen Doped Cr2Ge2Te6 Phase Change Material2020

    • Author(s)
      Yi Shuang, Shogo Hatayama, Daisuke Ando, and Yuji Sutou
    • Organizer
      相変化研究会シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] Two-stage displacive transformation mechanism from β to α phase in constrained MnTe polymorphic film2020

    • Author(s)
      Shunsuke Mori, Daisuke Ando, and Yuji Sutou
    • Organizer
      相変化研究会シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] Cr2Ge2Te6相変化薄膜の結晶高抵抗化メカニズム2020

    • Author(s)
      畑山祥吾,須藤祐司
    • Organizer
      日本金属学会秋期講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] MnTe薄膜の変位型相転移2020

    • Author(s)
      森竣祐,安藤大輔,須藤祐司
    • Organizer
      日本金属学会秋期講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 多形MnTe/AZO積層構造による自己選択性PCRAMへの可能性2020

    • Author(s)
      金美賢,森竣祐,安藤大輔,須藤祐司
    • Organizer
      日本金属学会秋期講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] p-MnTe/n-AZO積層構造素子のメモリ動作性2020

    • Author(s)
      金美賢,森竣祐,安藤大輔,須藤祐司
    • Organizer
      応用物理学会秋期講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 多形転移を伴うMnTe系相変化メモリの動作メカニズム2020

    • Author(s)
      森竣祐,安藤大輔,須藤祐司
    • Organizer
      応用物理学会秋期講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] アモルファスCr2Ge2Te6の高速結晶化機構の解明2020

    • Author(s)
      畑山祥吾,須藤祐司
    • Organizer
      応用物理学会秋期講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 省エネルギー動作に向けた相変化メモリ材料の研究開発2020

    • Author(s)
      須藤祐司,畑山祥吾,SHUANG YI,森竣祐
    • Organizer
      応用物理学会秋期講演大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Phase-change materials for low-energy operation PCRAM2020

    • Author(s)
      Yuji Sutou,Shunsuke Mori, Yi Shuang, Shogo Hatayama
    • Organizer
      International Conference on Solid State Devices and Materials (SSDM)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 相変化メモリ(PCRAM)の省エネルギー化に向けた材料開発2020

    • Author(s)
      須藤 祐司、畑山 祥吾
    • Organizer
      応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 変位型相変化に伴うMnTe薄膜の電気的および光学的スイッチング2020

    • Author(s)
      森 竣祐、安藤 大輔、須藤 祐司
    • Organizer
      応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 不揮発性メモリ用Cr2Ge2Te6相変化材料の局所構造の解明2020

    • Author(s)
      畑山 祥吾、シュアン イ、フォンス ポール、齊藤 雄太、コロボフ アレキサンダー、小林 啓介、進藤 怜史、安藤 大輔、須藤 祐司
    • Organizer
      応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 次世代不揮発性メモリ:PCRAMの新規材料開発2019

    • Author(s)
      須藤祐司
    • Organizer
      異分野新素材研究会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Inverse Resistance Change PCRAM with Cr2Ge2Te62019

    • Author(s)
      Shogo Hatayama and Yuji Sutou
    • Organizer
      The Future of Materials Engineering - Dramatic Innovation to the next 100 years
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] α-MnTe/AZO積層構造を用いたpn接合ダイオードの創製2019

    • Author(s)
      金美賢,森竣祐,安藤大輔,須藤祐司
    • Organizer
      応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Cu2GeTe3相変化メモリにおける動作エネルギーの電極面積依存性2019

    • Author(s)
      飯島平, 安藤大輔, 須藤祐司, ジュン ソプ アン, ユン ヘブ ソン
    • Organizer
      応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Cu2GeTe3相変化メモリにおける動作エネルギーの電極面積依存性2019

    • Author(s)
      飯島平, 畑山祥吾, 双逸, 森竣祐, ジュン ソプ アン, ユン ヘブ ソン, 安藤大輔, 須藤祐司
    • Organizer
      相変化研究会シンポジウム PCOS2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] Resistive switching in MnTe film2019

    • Author(s)
      Shunsuke Mori, Daisuke Ando, Yuji Sutou
    • Organizer
      相変化研究会シンポジウム PCOS2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] MnTeスパッタリング薄膜の加熱による相変化2019

    • Author(s)
      森 竣祐,安藤 大輔,須藤 祐司
    • Organizer
      応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] MnTe多形体薄膜の相変化2019

    • Author(s)
      森 竣祐、安藤 大輔、須藤 祐司
    • Organizer
      日本金属学会秋期講演大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Structural change by annealing in sputtered MnTe film2019

    • Author(s)
      Shunsuke Mori, Daisuke Ando, Yuji Sutou
    • Organizer
      EPCOS2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optical and electronic properties of MnTe thin film2019

    • Author(s)
      Shunsuke Mori, Daisuke Ando, Yuji Sutou
    • Organizer
      The Future of Materials Engineering - Dramatic Innovation to the next 100 years
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Conduction mechanism of sputtered amorphous Cr2Ge2Te6 film2019

    • Author(s)
      Shogo Hatayama, Daisuke Ando, Kobayashi Keisuke and Yuji Sutou
    • Organizer
      EPCOS2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 逆抵抗変化型Cr2Ge2Te6相変化材料のメモリ特性2019

    • Author(s)
      畑山祥吾, 安藤大輔, 須藤祐司
    • Organizer
      日本金属学会第秋期講演大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Local Structural Change in Cr2Ge2Te6 Phase Change Material, Inducing Abnormal Phase Change Behavior2019

    • Author(s)
      Shogo Hatayama, Yi Shuang, Paul Fons, Yuta Saito, Alexander V. Kolobov, Keisuke Kobayashi, Satoshi Shindo, Daisuke Ando
    • Organizer
      相変化研究会シンポジウム PCOS2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] スパッタ法により成膜したCr-Ge-Te化合物薄膜の相変化挙動2019

    • Author(s)
      畑山祥吾, 安藤大輔, 須藤祐司
    • Organizer
      日本材料科学会 若手研究者討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] MnTe/AZO積層構造を用いたpn接合ダイオード創製2019

    • Author(s)
      金美賢,森俊祐,安藤大輔,須藤祐司
    • Organizer
      日本材料科学会 若手研究者討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 窒素ドープCr2Ge2Te6の相変化挙動及および接触抵抗変化2019

    • Author(s)
      SHUANG YI,安藤 大輔,須藤祐
    • Organizer
      日本材料科学会 若手研究者討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] MnTe/Oxide積層構造にけるダイオード特性及びその応用可能性2019

    • Author(s)
      金 美賢、森 竣祐、安藤 大輔、須藤 祐司
    • Organizer
      応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] M. Kim, S. Mori, D. Adno, Y. Sutou2019

    • Author(s)
      M. Kim, S. Mori, D. Adno, Y. Sutou
    • Organizer
      相変化研究会シンポジウム PCOS2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] PN Diode Properties of N-type Oxide/p-type N-doped Cr2Ge2Te6 and Its Application for Slf-selective PCRAM2019

    • Author(s)
      Y. Shuang, S. Hatayama, J. Seop, J.P. Hong, D. Ando, Y.H. Song, Y. Sutou
    • Organizer
      EPCOS2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 低抵抗アモルファスCr2Ge2Te6の電気伝導機構2019

    • Author(s)
      畑山 祥吾、須藤 祐司、安藤 大輔、小池 淳一、小林 啓介
    • Organizer
      応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 不揮発性相変化メモリ用遷移金属カルコゲナイド相変化材料の開発2019

    • Author(s)
      齊藤 雄太、畑山 祥吾、雙 逸、進藤 怜史、フォンス ポール、コロボフ アレクサンダー、小林 啓介、須藤 祐司
    • Organizer
      応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Contact resistance change memory with N-doped Cr2Ge2Te6 phase change material2019

    • Author(s)
      YI SHUANG、Yuji Sutou、Shogo Hatayama、Satoshi Shindo、Song Yunheub、Daisuke Ando、Junichi Koike
    • Organizer
      応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Non-isothermal crystallization kinetics of amorphous Cr2Ge2Te6 film2018

    • Author(s)
      Shogo Hatayama, Yuji Sutou, Daisuke Ando, and Junichi Koike
    • Organizer
      相相変化研究会シンポジウム(PCOS)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 逆抵抗変化Cr2Ge2Te6相変化材料の結晶化メカニズム2018

    • Author(s)
      畑山 祥吾、須藤 祐司、安藤 大輔、小池 淳一、齊藤 雄太、進藤 怜史、ユン ヘブ ソン
    • Organizer
      応用物理学会秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 不揮発性メモリ用遷移金属相変化材料の電子構造の解明2018

    • Author(s)
      齊藤 雄太、須藤 祐司、フォンス ポール、コロボフ アレクサンダー、進藤 怜史、畑山 祥吾、雙 逸、コジーナ ゼニア、スケルトン ジョナサン、小林 啓介
    • Organizer
      応用物理学会秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 低抵抗アモルファス相と高抵抗結晶相を有するCr2Ge2Te6を用いた相変化メモリ2018

    • Author(s)
      畑山祥吾、須藤祐司、安藤大輔、小池淳一
    • Organizer
      シリコン材料・デバイス研究会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Crystallization Kinetics of Inverse Resistance Change Cr2Ge2Te62018

    • Author(s)
      Shogo Hatayama, Yuji Sutou, Daisuke Ando, and Junichi Koike
    • Organizer
      European Phase change and Ovonic Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Phase change behavior of non-bulk resistance change N-doped Cr2Ge2Te6 phase change material2018

    • Author(s)
      Y. Shuang, S. Hatayama, Y. Sutou, D. Ando, J. Koike, H. Tanimura, T. Ichitsubo
    • Organizer
      European Phase change and Ovonic Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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