Synthesis of novel magnetic ferroelectrics under high pressure with the use of ion exchange and hydrothermal reactions

2010 Fiscal Year Final Research Report

• Project/Area Number: 21750069
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Inorganic chemistry
• Research Institution: The Institute of Physical and Chemical Research
• Principal Investigator: ISHIWATA Shintaro The Institute of Physical and Chemical Research, 大学院・工学系研究科, 特任准教授 (00525355)
• Project Period (FY): 2009 – 2010
• Keywords: マルチフェロイックス / ペロブスカイト型マンガン酸化物 / 高圧合成 / 電気磁気効果 / 放射光X線回折

Research Abstract

We have succeeded in obtaining high-quality polycrystalline samples of perovskite Eu_<1-x>Y_xMnO_3 and Y_<1-x>Y_xMnO_3 by a high pressure technique with using single crystalline precursors of the ambient pressure phase. Complete multiferroic phase diagram of orthorhombic RMnO_3 was established. Furthermore, we have found that the magnetoelectric response is enhanced near the bicritical phase boundary. Single crystals of perovskite YMnO_3 were successfully grown under high pressure with a quasi hydrothermal condition. By using a synchrotron x-ray, we have observed for the first time ferroelectric lattice displacement driven by a magnetic order in YMnO_3.

Research Products

• [Journal Article] (2011)
  • Author(s): T.Kurumaji, S.Seki, S.Ishiwata, H.Murakawa, Y.Tokunaga, Y.Kaneko, Y.Tokura
  • Journal Title: Phys.Rev.Lett. 106 Pages: 167206
  • Peer Reviewed
• [Journal Article] (2011)
  • Author(s): H.Nakao, T.Murata, D.Bizen, Y.Murakami, K.Ohoyama, K.Yamada, S.Ishiwata, W.Kobayashi, I.Terasaki
  • Journal Title: J.Phys.Soc.Jpn. 80 Pages: 023711
  • Peer Reviewed
• [Journal Article] (2011)
  • Author(s): N.Kida, S.Kumakura, S.Ishiwata, Y.Taguchi, Y.Tokura
  • Journal Title: Phys.Rev.B 83 Pages: 064422
  • Peer Reviewed
• [Journal Article] (2011)
  • Author(s): S.Ishiwata, T.Nakano, I.Terasaki, Y.Uwatoko, H.Nakao, Y.Murakami, M.Takano
  • Journal Title: Phys.Rev.B 83 Pages: 020401(R)
  • Peer Reviewed
• [Journal Article] (2011)
  • Author(s): X.Z.Yu, N.Kanazawa, Y.Onose, K.Kimoto, W.Z.Zhang, S.Ishiwata, Y.Matsui, Y.Tokura
  • Journal Title: Nature Materials 10 Pages: 106-109
  • Peer Reviewed
• [Journal Article] (2010)
  • Author(s): Y.Tokunaga, Y.Kaneko, D.Okuyama, S.Ishiwata, T.Arima, S.Wakimoto, K.Kakurai, Y.Taguchi, Y.Tokura
  • Journal Title: Phys.Rev.Lett. 105 Pages: 257201
  • Peer Reviewed
• [Journal Article] (2010)
  • Author(s): S.Seki, T.Kurumaji, S.Ishiwata, H.Matsui, H.Murakawa, Y.Tokunaga, Y.Kaneko, T.Hasegawa, Y.Tokura
  • Journal Title: Phys.Rev.B 82 Pages: 064424(5)
  • Peer Reviewed
• [Journal Article] (2010)
  • Author(s): S.Ishiwata, D.Okuyama, K.Kakurai, M.Nishi, Y.Taguchi, Y.Tokura
  • Journal Title: Phys.Rev.B 81 Pages: 174418
  • Peer Reviewed
• [Journal Article] (2010)
  • Author(s): S.Ishiwata, Y.Kaneko, Y.Tokunaga, Y.Taguchi, T.Arima, Y.Tokura
  • Journal Title: Phys.Rev.B 81 Pages: 100411(R)
  • Peer Reviewed
• [Journal Article] (2010)
  • Author(s): Y.Takahashi, S.Ishiwata, S.Miyahara, Y.Kaneko, N.Furukawa, Y.Taguchi, R.Shimano, Y.Tokura
  • Journal Title: Phys.Rev.B 81 Pages: 100413(R)
  • Peer Reviewed
• [Journal Article]
  • Author(s): D.Okuyama, S.Ishiwata, Y.Takahashi, K.Yamauchi, S.Picozzi, K.Sugimoto, H.Sakai, M.Takata, R.Shimano, Y.Taguchi, T.Arima, Y.Tokura
  • Journal Title: Phys.Rev.B. 掲載決定
  • Peer Reviewed
• [Presentation] (2011)
  • Author(s): S.Ishiwata
  • Organizer: APS March Meeting 2011
  • Year and Date: 2011-03-21
• [Presentation] (2010)
  • Author(s): S.Ishiwata, D.Okuyama, K.Kakurai, M.Nishi, Y.Taguchi, Y.Tokura
  • Organizer: Flipper 2010 International Workshop on Single-Crystal Diffraction with Polarized Neutrons
  • Place of Presentation: Grenoble
  • Year and Date: 20100126-20100130
• [Presentation] (2010)
  • Author(s): S.Ishiwata, Y.Kaneko, M.Tokunaga, Y.Taguchi, Y.Tokura
  • Organizer: 日本物理学会平成22年度秋季大会
  • Year and Date: 2010-09-24
• [Presentation] (2010)
  • Author(s): S.Ishiwata, D.Okuyama, H.Sakai, Y.Tokunaga, K.Sugimoto, Y.Taguchi, T.Arima, Y.Tokura
  • Organizer: 日本物理学会第65回年次大会
  • Year and Date: 2010-03-21
• [Presentation] (2009)
  • Author(s): S.Ishiwata, Y.Taguchi, H.Murakawa, Y.Tokunaga, D.Okuyama, K.Kakurai, M.Nishi, Y.Onose, Y.Tokura
  • Organizer: 第33回日本磁気学会
  • Place of Presentation: 長崎
  • Year and Date: 2009-09-13
• [Presentation] (2009)
  • Author(s): S.Ishiwata, Y.Kaneko, Y.Taguchi, Y.Tokura
  • Organizer: Joint AIRAPT-22 & HPCJ-50 International Conference on High Pressure Science and Technology
  • Place of Presentation: Tokyo
  • Year and Date: 2009-07-28
• [Remarks] ホームページ等
  • URL: http://www.qpec.t.u-tokyo.ac.jp/ishiwata_lab/index.html