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Understanding the crystallization mechanism of amorphous van der Waals layered materials

Research Project

Project/Area Number 19H02619
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 30010:Crystal engineering-related
Research InstitutionKeio University (2020-2021)
National Institute of Advanced Industrial Science and Technology (2019)

Principal Investigator

FONS Paul  慶應義塾大学, 理工学部(矢上), 教授 (90357880)

Co-Investigator(Kenkyū-buntansha) 牧野 孝太郎  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 (30727764)
長谷 宗明  筑波大学, 数理物質系, 教授 (40354211)
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)
須藤 祐司  東北大学, 工学研究科, 教授 (80375196)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2021: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2019: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Keywords層状カルコゲナイド / テルライド / 遷移金属ダイカルコゲナイド / スパッタリング法 / 結晶化 / アモルファス / X線吸収 / 層状物質 / カルコゲナイド
Outline of Research at the Start

原子層厚さのファンデルワールスカルコゲナイド新しい二次元的な材料として材料研究の最先端に躍り出ている。MoTe2などに代表される遷移金属ダイカルコゲナイドという物質は、そのユニークな物理特性から次世代のエレクトロニクスを担う新材料として期待されている。一方で、その優れた電気物性を最大限に利用するためには、結晶の軸が揃った薄膜を均一に大面積成膜できることが実用化のキーテクノロジーとなる。本研究では、アモルファス/結晶の相転移現象を利用した全く新しい高配向MoTe2薄膜の形成手法を提案し、その相転移メカニズムを解明すると共に、次世代エレクトロニクス応用へ向けた大面積化の実現を目指す。

Outline of Final Research Achievements

In this project, focusing on the structural features of layered chalcogenides, we have elucidated the crystallization mechanism that changes the dimension of chemical bonding from 3D-amorphous to 2D-crystal, measured ultrafast dynamics under laser irradiation, and developed a deposition technique for highly oriented layered chalcogenide thin films by sputtering. Due to the high structural anisotropy in the in-plane and out-of-plane directions, specific behaviors were observed in crystallization and ultrafast phenomena. By understanding these behaviors, we have succeeded in fabricating various highly oriented layered chalcogenide thin films.

Academic Significance and Societal Importance of the Research Achievements

本研究によって、多数の層状カルコゲナイドのアモルファス薄膜の結晶化現象について知見を得ることができた。構造解析や超高速ダイナミクス、高配向成膜といったいくつかの方向性をもって研究を進めてきたが、どの研究についてもその分野における重要な国際誌にて誌上発表することができた。今後物理的な限界を迎えることになるSiエレクトロニクスにおいて、層状物質は究極の微細化を実現できるポテンシャルを秘めており、高い期待が持たれている。本研究で得られた結晶化現象や薄膜形成技術に関する様々な知見は、次世代電子デバイスの実現に大きな貢献をすると考えられる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (36 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (4 results) Journal Article (15 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 15 results,  Open Access: 4 results) Presentation (17 results) (of which Int'l Joint Research: 5 results,  Invited: 2 results)

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

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Pardubice(チェコ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Hanyang University(韓国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Herzen State Pedagogical University(ロシア連邦)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Improved Ordering of Quasi-Two-Dimensional MoS2 via an Amorphous-to-Crystal Transition Initiated from Amorphous Sulfur-Rich MoS2+x2022

    • Author(s)
      Krbal Milos、Prokop Vit、Prikryl Jan、Pereira Jhonatan Rodriguez、Pis Igor、Kolobov Alexander V.、Fons Paul J.、Saito Yuta、Hatayama Shogo、Sutou Yuji
    • Journal Title

      Crystal Growth & Design

      Volume: - Issue: 5 Pages: 3072-3079

    • DOI

      10.1021/acs.cgd.1c01504

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Photo‐induced Tellurium segregation in MoTe22022

    • Author(s)
      Fukuda Takumi、Kaburauchi Ryota、Saito Yuta、Makino Kotaro、Fons Paul、Ueno Keiji、Hase Muneaki
    • Journal Title

      Physica Status Solidi (RRL) Rapid Research Letters

      Volume: - Issue: 9

    • DOI

      10.1002/pssr.202100633

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Amorphous-to-Crystal Transition in Quasi-Two-Dimensional MoS2: Implications for 2D Electronic Devices2021

    • Author(s)
      Krbal Milos、Prokop Vit、Kononov Alexey A.、Pereira Jhonatan Rodriguez、Mistrik Jan、Kolobov Alexander V.、Fons Paul J.、Saito Yuta、Hatayama Shogo、Shuang Yi、Sutou Yuji、Rozhkov Stepan A.、Stellhorn Jens R.、Hayakawa Shinjiro、Pis Igor、Bondino Federica
    • Journal Title

      ACS Applied Nano Materials

      Volume: 4 Issue: 9 Pages: 8834-8844

    • DOI

      10.1021/acsanm.1c01504

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Understanding the low resistivity of the amorphous phase of Cr2Ge2Te6 phase-change material: Experimental evidence for the key role of Cr clusters2021

    • Author(s)
      Hatayama Shogo、Kobayashi Keisuke、Saito Yuta、Fons Paul、Shuang Yi、Mori Shunsuke、Kolobov Alexander V.、Sutou Yuji
    • Journal Title

      Physical Review Materials

      Volume: 5 Issue: 8 Pages: 085601-085601

    • DOI

      10.1103/physrevmaterials.5.085601

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Recent developments concerning the sputter growth of chalcogenide-based layered phase-change materials2021

    • Author(s)
      Saito Yuta、Morota Misako、Makino Kotaro、Tominaga Junji、Kolobov Alexander V.、Fons Paul
    • Journal Title

      Materials Science in Semiconductor Processing

      Volume: 135 Pages: 106079-106079

    • DOI

      10.1016/j.mssp.2021.106079

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Enhancement of Spin Pumping from CoFeB to Sb2Te3 Layers by Crystal Orientation Control2021

    • Author(s)
      Morota Misako、Saito Yuta、Uchida Noriyuki
    • Journal Title

      physica status solidi Rapid Research Letters

      Volume: 15 Issue: 9

    • DOI

      10.1002/pssr.202100247

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Low resistance-drift characteristics in Cr2Ge2Te6-based phase change memory devices with a high-resistance crystalline phase2021

    • Author(s)
      Hatayama Shogo、Song Yun-Heub、Sutou Yuji
    • Journal Title

      Materials Science in Semiconductor Processing

      Volume: 133 Pages: 105961-105961

    • DOI

      10.1016/j.mssp.2021.105961

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [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] Ultrafast scattering dynamics of coherent phonons in Bi1-xSbx in the Weyl semimetal phase2021

    • Author(s)
      Komori Yuta、Saito Yuta、Fons Paul、Hase Muneaki
    • Journal Title

      New Journal of Physics

      Volume: 23 Issue: 2 Pages: 023034-023034

    • DOI

      10.1088/1367-2630/abe2c0

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Study of Chalcogenide Phase-Change Materials for Next-Generation Electronic Devices2020

    • Author(s)
      Saito Yuta
    • Journal Title

      Materia Japan

      Volume: 59 Issue: 7 Pages: 387-392

    • DOI

      10.2320/materia.59.387

    • NAID

      130007867263

    • ISSN
      1340-2625, 1884-5843
    • Year and Date
      2020-07-01
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural Metastability in Chalcogenide Semiconductors: The Role of Chemical Bonding2020

    • Author(s)
      Kolobov Alexander V.、Saito Yuta、Fons Paul、Krbal Milos
    • Journal Title

      physica status solidi (b)

      Volume: 257 Issue: 11 Pages: 2000138-2000138

    • DOI

      10.1002/pssb.202000138

    • 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] Electric Fields and Interfacial Phase‐Change Memory Structures2020

    • Author(s)
      Fons Paul、Kolobov Alexander V.、Saito Yuta
    • Journal Title

      physica status solidi (RRL) Rapid Research Letters

      Volume: 15 Issue: 3 Pages: 2000412-2000412

    • DOI

      10.1002/pssr.202000412

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High-quality sputter-grown layered chalcogenide films for phase change memory applications and beyond2020

    • Author(s)
      Y. Saito, P. Fons, A. V Kolobov, K. Mitrofanov, K. Makino, J. Tominaga, S. Hatayama, Y. Sutou, M. Hase, J. D. Robertson
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 53 Issue: 28 Pages: 284002-284002

    • DOI

      10.1088/1361-6463/ab850b

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Ultrafast dynamics of the low frequency shear phonon in 1T′-MoTe22020

    • Author(s)
      T. Fukuda, K. Makino, Y. Saito, P. Fons, A. V. Kolobov, K. Ueno, and M. Hase
    • Journal Title

      Applied Physics Letters

      Volume: 116 Issue: 9 Pages: 093103-093103

    • DOI

      10.1063/1.5143485

    • NAID

      120007127630

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 配向制御したカルコゲナイド相変化材料薄膜2022

    • Author(s)
      齊藤雄太
    • Organizer
      2022年第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Cr2Ge2Te6アモルファス薄膜の結晶化に伴う局所構造変化2022

    • Author(s)
      齊藤雄太
    • Organizer
      2022年春期(第170回)日本金属学会講演大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] スパッタ法で作製したアモルファスMoTe2薄膜の結晶化挙動2021

    • Author(s)
      齊藤雄太
    • Organizer
      2021年秋期(第169回)日本金属学会講演大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 層状カルコゲナイドにおける化学結合の次元変化を伴う結晶化2021

    • Author(s)
      齊藤雄太
    • Organizer
      2021年第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 2H-MoTe2の長寿命コヒーレントフォノン周期駆動下における非平衡定常状態2021

    • Author(s)
      福田拓未、牧野孝太郎、齊藤雄太、Paul Fons、Alexander V. Kolobov、安藤淳、 森拓哉、石川良、上野啓司、Jessica Afalla、長谷宗明
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Mapping structural phases of MoTe2 sputtered films by micro coherent phonon spectroscopy2021

    • Author(s)
      Ryota Kaburauchi, Takumi Fukuda, Takuto Ichikawa, Yuta Saito, Kotaro Makino, Paul Fons, and Muneaki Hase
    • Organizer
      European Phase Change and Ovonic Symposium 2021 (EPCOS2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Photo-induced Tellurium segregation in MoTe22021

    • Author(s)
      Takumi Fukuda, Ryota Kaburauchi, Yuta Saito, Kotaro Makino, Paul Fons, Keiji Ueno, and Muneaki Hase
    • Organizer
      European Phase Change and Ovonic Symposium 2021 (EPCOS2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] アモルファス結晶化を利用した高品質カルコゲナイド薄膜の作製2021

    • Author(s)
      齊藤雄太、Paul Fons、Alexander V. Kolobov、Kirill V. Mitrofanov、牧野孝太郎、富永淳二
    • Organizer
      2020年第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] カルコゲナイド系相変化材料の発展と今後の展望2021

    • Author(s)
      齊藤雄太
    • Organizer
      2021年第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Bi1-xSbxの超高速コヒーレントフォノン散乱ダイナミクス2021

    • Author(s)
      小森雄太、齊藤 雄太、フォンス ポール、長谷 宗明
    • Organizer
      2021年第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Ultrafast dynamics of the low frequency shear phonon in 1T’-MoTe22020

    • Author(s)
      Takumi Fukuda, Kotaro Makino, Yuta Saito, Paul Fons, Alexander V. Kolobov, Keiji Ueno, Muneaki Hase
    • Organizer
      32nd Symposium on Phase Change Oriented Science
    • Related Report
      2020 Annual Research Report
  • [Presentation] 相変化材料の材料設計指針とテルライド材料の新しい展開2020

    • Author(s)
      齊藤雄太
    • Organizer
      2020年第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Recent update on the growth of crystalline phase change materials by sputtering2019

    • Author(s)
      Yuta Saito, Paul Fons, Alexander V. Kolobov, Kirill V. Mitrofanov, Kotaro Makino, Junji Tominaga, Shogo Hatayama, Yuji Sutou, Muneaki Hase, and John Robertson
    • Organizer
      31st Symposium on Phase Change Oriented Science 2019 (PCOS2019)
    • Related Report
      2019 Annual Research Report
  • [Presentation] Revisiting the growth mechanism of layered crystalline phase change materials by sputtering2019

    • Author(s)
      Yuta Saito, Alexander V. Kolobov, Paul Fons, Kirill V. Mitrofanov, Kotaro Makino, Junji Tominaga, Muneaki Hase, and John Robertson
    • Organizer
      European Phase Change and Ovonics Symposium 2019 (EPCOS2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Sub-Nanosecond Crystallization of Melt-Quenched MoS2 - An Ab Initio Molecular Dynamics Study2019

    • Author(s)
      Paul Fons, Alexander V. Kolobov, Yuta Saito, Yuji Sutou, Muneaki Hase
    • Organizer
      Materials Research Society Meeting 2019 Fall
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ultrafast coherent lattice vibrations in 1T'-MoTe2 bulk crystal2019

    • Author(s)
      Takumi Fukuda, Kotaro Makino, Yuta Saito, Paul Fons, Alexander V. Kolobov, Keiji Ueno and Muneaki Hase
    • Organizer
      Materials Research Society Meeting 2019 Fall
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 1T'-MoTe2バルク結晶におけるコヒーレントフォノンの観測2019

    • Author(s)
      福田拓未,牧野孝太郎, 齊藤雄太, Paul Fons, Alexander V. Kolobov, 上野啓司,長谷宗明
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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