• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Control of magnetization distribution in MnV2O4 using pressure: correlation between orbital-ordered and magnetic domains revealed by TEM

Research Project

Project/Area Number 25630299
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Structural/Functional materials
Research InstitutionTohoku University

Principal Investigator

MURAKAMI Yasukazu  東北大学, 多元物質科学研究所, 准教授 (30281992)

Co-Investigator(Kenkyū-buntansha) AKASE Zentaro  東北大学, 多元物質科学研究所, 助教 (90372317)
Co-Investigator(Renkei-kenkyūsha) SHINDO Daisuke  東北大学, 多元物質科学研究所, 教授 (20154396)
ARIMA Taka-hisa  東京大学, 新領域創成科学研究科, 教授 (90232066)
Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords電子顕微鏡 / ドメイン構造 / 磁区 / 双晶 / 電子線ホログラフィー / ローレンツ顕微鏡法 / 金属物性 / 強相関電子系 / セラミックス / 結晶工学
Outline of Final Research Achievements

The complex magnetic microstructure in MnV2O4 was studied by using the techniques of in situ transmission electron microscopy. In particular, this study focused on the effect of applied pressure on the magnetization distribution, which is a key for the development of new sensors and actuators. We have developed a method that allows for applying pressure to thin-foil specimens at cryogenic temperatures, using the difference of thermal expansion between the MnV2O4 crystal and the Mo plate. The observations demonstrate that the applied pressure significantly affect the twinning microstructure, which is attributed to the orbital order of V-3d electrons, and accordingly controls the magnetization distribution in the MnV2O4 crystal.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (7 results)

All 2014 2013

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results,  Acknowledgement Compliant: 2 results) Presentation (4 results) (of which Invited: 2 results)

  • [Journal Article] Magnetization Amplified by Structural Disorder within Nanometer-scale Interface Region2014

    • Author(s)
      Y. Murakami et al.
    • Journal Title

      Nature Commun.

      Volume: 5 Issue: 1 Pages: 4133-4133

    • DOI

      10.1038/ncomms5133

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Morphology and Magnetic Flux Distribution in Superparamagnetic, Single-crystalline Fe3O4 Nanoparticle Rings2014

    • Author(s)
      Y. Murakami et al.
    • Journal Title

      Appl. Phys. Lett.

      Volume: 105 Issue: 18 Pages: 183102-183102

    • DOI

      10.1063/1.4901008

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Revealing magnetic domain structure in functional Fe2.5Zn0.5O4 wires by transmission electron microscopy2014

    • Author(s)
      Y. Murakami, A. Ohta, A. N. H attori, T. Kanki, S. Aizawa, T. Tanigaki, H. S. Park, H. Tanaka, D. Shindo
    • Journal Title

      Acta. Mater.

      Volume: 64 Pages: 144-153

    • DOI

      10.1016/j.actamat.2013.10.015

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Relationship between magnetic domains and twin plates in MnV2O42014

    • Author(s)
      Y. Murakami
    • Organizer
      International Conference on Martensitic Transformations
    • Place of Presentation
      Bilbao, Spain
    • Year and Date
      2014-07-10
    • Related Report
      2014 Annual Research Report
  • [Presentation] Magnetic and Crystallographic Domains in MnV2O42014

    • Author(s)
      Y. Murakami
    • Organizer
      Moscow International Symposium on Magnetism 2014
    • Place of Presentation
      Moscow, Russia
    • Year and Date
      2014-06-30
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] マルテンサイト系材料の磁気微細構造-形成過程と磁化分布の精密解析-2014

    • Author(s)
      村上恭和
    • Organizer
      日本金属学会春期大会
    • Place of Presentation
      東京工業大学
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] TEM内での低温圧力印加技術を用いたMnV2O4のドメイン構造解析2013

    • Author(s)
      村井智 他
    • Organizer
      日本金属学会秋期大会
    • Place of Presentation
      金沢大学
    • Related Report
      2013 Research-status Report

URL: 

Published: 2014-07-25   Modified: 2019-07-29  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi