Detect and control of the domain structure in magneto-electric multiferroics

2011 Fiscal Year Final Research Report

• Project/Area Number: 22840006
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: The University of Tokyo (2011); Tohoku University (2010)
• Principal Investigator: ABE Nobuyuki 東京大学, 大学院・新領域創成科学研究科, 助教 (70582005)
• Project Period (FY): 2010 – 2011
• Keywords: マルチフェロイクス / 電気磁気効果 / ドメイン壁

Research Abstract

It has been pointed out that domain walls in spin-induced ferroelectrics play an important role in enhancing their magnetoelectric coupling. In this research, we have observed a systematic change in dynamics of 90-degree domain walls in a series of Tb_<1-x> Dy_xMnO_3 by the dielectric measurements. Moreover, we have constructed that the magneto-optical measurement system for the detecting of the multiferroic domain structure.

Research Products

• [Journal Article] Correlation between the mobility of domain wall and polarization flop direction in a slanted magnetic field in the helimagnetic ferroelectrics Tb_<1-x> Dy_xMnO_3 (2011)
  • Author(s): N. Abe, K. Taniguchi, H. Sagayama, H. Umetsu, T. Arima
  • Journal Title: Physical Review B Volume: 83巻 Pages: 060403R(1-4)
  • Peer Reviewed
• [Journal Article] Observation of Spin Helicity Using Nonresonant Circularly Polarized X-ray Diffraction Analysis (2010)
  • Author(s): H. Sagayama, N. Abe, K. TaniguchiT. Arima, Y. Yamasaki, D. Okuyama, Y. Tokura, S. Sakai, T. Morita, T. Komesu, H. Ohsumi, M. Takata
  • Journal Title: Journal of the Physical Society of Japan Volume: 79巻 Pages: 043711(1)-(4)
  • Peer Reviewed
• [Presentation] Magnetically induced polarization in Copper metaborate CuB_2O_4 (2012)
  • Author(s): N. D. Khanh, N. Abe, M. Tokunaga, M. Saito, T. Arima
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 2012-03-24
• [Presentation] Ca_2FeAlO_5における電気磁気効果 (2012)
  • Author(s): 阿部伸行, Nguyen Duy Khanh,新居陽一,北川祐太朗,有馬孝尚
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 2012-03-24
• [Presentation] (Cu, Ni) B_2O_4における光のローレンツ力の観測 (2011)
  • Author(s): 久保響太,阿部伸行,有馬孝尚
  • Organizer: 日本物理学会2011年秋季大会
  • Place of Presentation: 富山大学
  • Year and Date: 2011-09-23
• [Presentation] 中性子非弾性散乱で観測した磁気強誘電体TbMnO_3の磁気励起 (2011)
  • Author(s): 大泉広野,佐賀山基,阿部伸行,有馬孝尚,稲村泰弘,中村充孝,梶本亮一,新井正敏
  • Organizer: 日本物理学会2011年秋季大会
  • Place of Presentation: 富山大学
  • Year and Date: 2011-09-21
• [Presentation] Tb_<1-x> Dy_xMnO_3におけるらせん磁気ドメイン壁の誘電応答 (2011)
  • Author(s): 阿部伸行
  • Organizer: 「フラストレーションが創る新しい物性」第7回トピカルミーティング「フラストレーションとスピン・電荷・軌道・格子自由度」
  • Place of Presentation: 滋賀県彦根市
  • Year and Date: 2011-07-01
• [Presentation] Correlation between magnetocapacitance effect and polarization flop direction in aslanted magnetic field in Tb_<1-x> Dy_xMnO_3 (2011)
  • Author(s): N. Abe
  • Organizer: APS March Meeting
  • Place of Presentation: アメリカ合衆国ダラス
  • Year and Date: 2011-03-25
• [Presentation] Correlation between magnetocapacitanse effect and polarization flop direction in a slanted magnetic field in Tb_<1-x> Dy_xMnO_3 (2011)
  • Author(s): N. Abe
  • Organizer: The 3rd APCTP Workshop on Multiferroics
  • Place of Presentation: 早稲田大学
  • Year and Date: 2011-01-18
• [Presentation] Correlation between magnetocapacitanse effect and polarization flop direction in a slanted magnetic field in multiferroic helimagnet (2011)
  • Author(s): N. Abe
  • Organizer: International Conference on Frustration inCondensed Matter
  • Place of Presentation: 仙台国際センター
  • Year and Date: 2011-01-12