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Investigations of imprint phenomena in ferroelectric random access memories (FeRAM) with first-principles and molecular-dynamics calculations

Research Project

Project/Area Number 23740230
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Condensed matter physics I
Research InstitutionTohoku University

Principal Investigator

NISHIMATSU Takeshi  東北大学, 金属材料研究所, 助教 (70323095)

Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords強誘電体 / 分子動力学シミュレーション / FeRAM / 第一原理計算 / フリーソフトウェア / ドメイン構造 / PbTiO3 / 相転移 / 分子動力学シミュレーショ ン
Research Abstract

We are developing a molecular dynamics (MD) simulator for ferroelectrics and distributing it from http:/ /loto.sourcef orge.net/feram/ as free software. We firstly succeeded in MD simulations of 90° domain structures in PbTiO3.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Research-status Report
  • Research Products

    (21 results)

All 2013 2012 2011 Other

All Journal Article (3 results) (of which Peer Reviewed: 2 results) Presentation (14 results) (of which Invited: 1 results) Remarks (4 results)

  • [Journal Article] Molecular Dynamics Simulation of 90˚ Ferroelectric Domains in PbTiO_32012

    • Author(s)
      T. Nishimatsu, K. Aoyagi, T. Kiguchi, T.J. Konno, Y. Kawazoe, H. Funakubo, A. Kumar, and U.V. Waghmare
    • Journal Title

      J. Phys. Soc. Jpn

      Volume: 81 Issue: 12 Pages: 1247021-5

    • DOI

      10.1143/jpsj.81.124702

    • URL

      http://dx.doi.org/10.1143/JPSJ.81.124702

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effective Hamiltonian Methods for Predicting the Electrocaloric Behavior of BaTiO32012

    • Author(s)
      S. P. Beckman, L. F. Wan, Jordan A. Barr and Takeshi Nishimatsu
    • Journal Title

      Materials Letters

      Volume: 89 Pages: 254-257

    • DOI

      10.1016/j.matlet.2012.08.102

    • URL

      http://dx.doi.org/10.1016/j.matlet.2012.08.102

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
  • [Journal Article] The structural, dielectric, elastic, and piezoelectric properties of KNbO3 from first-principles methods2012

    • Author(s)
      L. F. Wan, T. Nishimatsu and S. P. Beckman
    • Journal Title

      J. Appl. Phys.

      Volume: 111 Issue: 10 Pages: 1041071-7

    • DOI

      10.1063/1.4712052

    • URL

      http://dx.doi.org/10.1063/1.4712052

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Presentation] 強誘電体の電気熱量効果の直接的な分子動力学計算2013

    • Author(s)
      西松毅,Scott P.Beckman,J.A.Barr,L.F.Wan
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Year and Date
      2013-03-28
    • Related Report
      2012 Final Research Report
  • [Presentation] 大規模探索計算で切り開く材料計算科学,シンポジウム公演2013

    • Author(s)
      西松毅
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Year and Date
      2013-03-27
    • Related Report
      2012 Final Research Report
  • [Presentation] Molecular-Dynamics Study of Interactions between Point-Defects and Ferroelectric Domains2013

    • Author(s)
      Takeshi Nishimatsu
    • Organizer
      Fundamental Physics of Ferroelectrics and Related Materials Workshop2013
    • Place of Presentation
      米国アイオワ州立大学
    • Related Report
      2012 Final Research Report
  • [Presentation] 強誘電体の電気熱量効果の直接的な分子動力学計算2013

    • Author(s)
      西松毅,Scott P. Beckman,J. A. Barr,L. F. Wan
    • Organizer
      日本物理学会 第68回年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] Molecular-Dynamics Study of Interactions between Point-Defects and Ferroelectric Domain2013

    • Author(s)
      Takeshi Nishimatsu
    • Organizer
      Fundamental Physics of Ferroelectrics and Related Materials Workshop 2013
    • Place of Presentation
      米国アイオワ州立大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] BaTiO3の電気熱量効果の分子動力学計算2012

    • Author(s)
      西松毅,ScottP.Beckman,J.A.Barr,L.F.Wan
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-20
    • Related Report
      2012 Final Research Report
  • [Presentation] PbTiO3の昇温/降温分子動力学シミュレーション2012

    • Author(s)
      西松毅,青柳健大,木口賢紀,今野豊彦,川添良幸,Anil Kumar,Umesh V.Waghmare
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学西宮上ケ原キャンパス
    • Year and Date
      2012-03-24
    • Related Report
      2012 Final Research Report
  • [Presentation] Heating-up and cooling-down molecular-dynamics simulations of 90°domain structures in PbTiO32012

    • Author(s)
      Takeshi Nishimatsu, K. Aoyagi, T. Kiguchi, T.J. Konno, Y. Kawazoe, A. Kumar, Umesh .V. Waghmare
    • Organizer
      Fundamental Physics of Ferroelectrics and Related Materials 2012
    • Place of Presentation
      米国イリノイ州Argonne National Laboratory
    • Year and Date
      2012-01-31
    • Related Report
      2012 Final Research Report
  • [Presentation] Molecular dynamics simulations of bulk and thin-film ABO3 perovskite-type ferroelectrics2012

    • Author(s)
      Takeshi Nishimatsu
    • Organizer
      The IUMRS International Conference on Electronic Materials (IUMRS-ICEM2012), 招待公演
    • Place of Presentation
      パシフィコ横浜
    • Related Report
      2012 Final Research Report
  • [Presentation] BaTiO3の電気熱量効果の分子動力学計算2012

    • Author(s)
      西松毅,Scott P. Beckman,J. A. Barr,L. F. Wan
    • Organizer
      日本物理学会 2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] Molecular dynamics simulations of bulk and thin-film ABO3 perovskite-type ferroelectrics2012

    • Author(s)
      Takeshi Nishimatsu
    • Organizer
      The IUMRS International Conference on Electronic Materials (IUMRS-ICEM2012)
    • Place of Presentation
      パシフィコ横浜
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] PbTiO3の昇温/降温分子動力学シミュレーション2012

    • Author(s)
      西松毅,青柳健大,木口賢紀,今野豊彦,川添良幸,Anil Kumar,Umesh V. Waghmare
    • Organizer
      日本物理学会 第67回年次大会
    • Place of Presentation
      関西学院大学西宮上ケ原キャンパス,兵庫県
    • Related Report
      2011 Research-status Report
  • [Presentation] 強誘電体ドメイン境界の格子欠陥によるピン留めの分子動力学シミュレーション2011

    • Author(s)
      西松毅,川添良幸,Umesh V.Waghmare
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学
    • Year and Date
      2011-09-22
    • Related Report
      2012 Final Research Report
  • [Presentation] 強誘電体ドメイン境界の格子欠陥によるピン留めの分子動力学シミュレーション2011

    • Author(s)
      西松毅,川添良幸,Umesh V. Waghmare
    • Organizer
      日本物理学会 第66回秋季大会
    • Place of Presentation
      富山大学,富山県
    • Related Report
      2011 Research-status Report
  • [Remarks] から本研究課題で改良を進めたferamプログラムをフリーソフトウエアとして公開している。また、このホームページでは研究成果の公開も進めている。

    • URL

      http://loto.sourceforge.net/feram/

    • Related Report
      2012 Final Research Report
  • [Remarks] 解説記事西松毅:強誘電体薄膜キャパシタのヒステリシスループの分子動力学計算、セラミックス、第46巻6月号、pp.456-461、2011年6月。

    • Related Report
      2012 Final Research Report
  • [Remarks] feram: 強誘電体の高速分子動力学シミュレーション

    • URL

      http://loto.sourceforge.net/feram/

    • Related Report
      2012 Annual Research Report
  • [Remarks]

    • URL

      http://loto.sourceforge.net/feram/www.cms-initiative.jp/ja/torrent/torrent-no.4/torrent_04_ja.pdf

    • Related Report
      2011 Research-status Report

URL: 

Published: 2011-08-05   Modified: 2020-05-15  

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