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

Microscopic mechanism of electromagnetic excitations in multiferroics

Research Project

Project/Area Number 15K05154
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics II
Research InstitutionHigh Energy Accelerator Research Organization

Principal Investigator

Sagayama Hajime  大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 准教授 (90436171)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2017: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2016: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords電気磁気効果 / 交差相関 / スピン格子相互作用 / スピン軌道相互作用 / マルチフェロイクス / 交差相関物性 / エレクトロマグノン / マルチフェロイック / 磁気励起 / X線磁気回折 / 円偏光X線回折 / 中性子散乱 / スピン波
Outline of Final Research Achievements

The object of this project is clarifying microscopic mechanism of the cross-correlation properties and understanding dinamical magnetoelectric phenomena in multiferroic materials. First, in order to understand the electromagnetic excitations observed around E ~ 2.5meV in representative spin-spiral multiferroic material TbMnO3, we have performed inelastic neutron scattering experiments. We found prabolic magnetic excitations around (1 -1 0) which is one of the crystallcraphic gamma point, although theoretical studies previously predicted that non-dispersive excitations in the L = 0 plane. Energy gap at the gamma is estimated to be 2.5 meV, which is close to that of the electromagnetic excitaions.
To obtaine fine-understanding of the electromagnetic interaction in multiferroic materials, we have performed circulay polarized x-ray diffraction experiment on single crystal sample of YFeO3. We have suceeded In observing direct coupling of the antiferroelectricity and ferromagnetisity.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (9 results)

All 2018 2017 2016 2015

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Physical properties and crystal structure analysis of double-perovskite NdBaMn2O6 by using single crystals2017

    • Author(s)
      S. Yamada, H. Sagayama, K. Higuchi, T. Sasaki, K. Sugimoto, T. Arima
    • Journal Title

      Phys. Rev. B

      Volume: 95 Issue: 3 Pages: 035101-035101

    • DOI

      10.1103/physrevb.95.035101

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] Magnetoelectric coupling in the honeycomb antiferromagnet Co4Nb2O92016

    • Author(s)
      N. D. Khanh, N. Abe, H. Sagayama, A. Nakao, T. Hanashima, R. Kiyanagi, Y. Tokunaga, and T. Arima
    • Journal Title

      physical review B

      Volume: 93 Issue: 7

    • DOI

      10.1103/physrevb.93.075117

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] Symmetry Lowering in LaOBiS2: A Mother Material for BiS2-Based Layered Superconductors2015

    • Author(s)
      Ryoko Sagayama, Hajime Sagayama, Reiji Kumai, Youichi Murakami, Takuya Asano, Joe Kajitani, Ryuji Higashinaka, Tatsuma D. Matsuda, and Yuji Aoki
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 84 Issue: 12 Pages: 123703-123703

    • DOI

      10.7566/jpsj.84.123703

    • NAID

      210000133761

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Large trigonal-field effect on spin-orbit coupled states in a pyrochlore iridate2015

    • Author(s)
      Daisuke Uematsu, Hajime Sagayama, Taka-hisa Arima, Jun J. Ishikawa, Satoru Nakatsuji, Hidenori Takagi, Masahiro Yoshida, Jun'ichiro Mizuki, and Kenji Ishii
    • Journal Title

      physical review B

      Volume: 92 Issue: 9

    • DOI

      10.1103/physrevb.92.094405

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] X-ray magnetic circular dichroism study of an orbital ordered state in the spinel-type vanadium oxide AV2O4(A=Mn,Fe)2015

    • Author(s)
      K. Matsuura, H. Sagayama, Y. Nii, N. D. Khanh, N. Abe, and T. Arima
    • Journal Title

      physical review B

      Volume: 92 Issue: 3

    • DOI

      10.1103/physrevb.92.035133

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Presentation] 円偏光X線を用いたYFeO3におけるDMベクトルの符号決定2018

    • Author(s)
      徳村謙祐, 佐賀山基, 松浦慧介, 阿部伸行, 徳永祐介, 有馬孝尚
    • Organizer
      第31回日本放射光学会年会・放射光科学合同シンポジウム
    • Related Report
      2017 Annual Research Report
  • [Presentation] 円偏光X線を用いたYFeO3におけるDMベクトルの符号決定2017

    • Author(s)
      徳村謙祐, 佐賀山基, 松浦慧介, 阿部伸行, 徳永祐介, 有馬孝尚
    • Organizer
      2017年日本物理学会秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Ferroelectricity Driven by Charge and Orbital Ordering in the A-site Ordered Perovskite Manganite2017

    • Author(s)
      Hajime Sagayama
    • Organizer
      BIT's 3rd World Congress of Smart Materials - 2017
    • Place of Presentation
      Bangkok (Thailand)
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 放射光X線を用いたLa(OF)BiS2の格子歪の研究2016

    • Author(s)
      佐賀山遼子, 佐賀山基, 熊井玲児, 村上洋一, 浅野卓也, 梶谷丈, 東中隆二, 松田達磨, 青木勇二
    • Organizer
      日本物理学会第71回年次大会
    • Place of Presentation
      東北学院大学泉キャンパス(宮城県仙台市)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Research-status Report

URL: 

Published: 2015-04-16   Modified: 2020-05-15  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi