Relization of giant piezpelectric response induced by polarization rotation

• Project/Area Number: 15K14119
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Inorganic materials/Physical properties
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Masaki Azuma 東京工業大学, 科学技術創成研究院, 教授 (40273510)
• Co-Investigator(Kenkyū-buntansha): 北條 元 九州大学, 総合理工学研究院, 准教授 (90611369)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: Polarization rotation / Piezoeelctric material / giant c/a / BiFeO3 / 圧電体 / 分極回転 / 薄膜 / 機能性セラミックス / 高圧合成

Outline of Final Research Achievements

In this study, we fabricated high-quality cobalt-substituted BiFeO3 epitaxial thin films with a giant c/a ratio by pulsed laser deposition, and systematically studied the relationship between the crystal structure and the piezoelectric responses. From crystal structure analysis, we found that all the BFCO thin films had a giant c/a ratio (1.2-1.3) same as the bulk phase and the crystal structure underwent successive transitions from MC-type monoclinic phase (x= 0-0.15) to MA-type monoclinic phase (x= 0.15-0.30), and finally to tetragonal phase (x= 0.50) with increasing Co content x. The MA phase is essentially the same as that found in the bulk BFCO where polarization rotation has been confirmed. From piezoelectric measurements, we found that the responses were enhanced in the MA phase. This indicates that polarization rotation does play a crucial role to realize improved piezoelectric responses in this material.

Research Products

• [Int'l Joint Research] S. N. Bose National Centre(インド)
• [Journal Article] Ferromagnetism at Room Temperature Induced by Spin Structure Change in BiFe1－xCoxO3 Thin Films (2017)
  • Author(s): Hajime Hojo, Ryo Kawabe, Keisuke Shimizu, Hajime Yamamoto, Ko Mibu, Kartik Samanta, Tanusri Saha-Dasgupta, and Masaki Azuma
  • Journal Title: Advanced Materials Volume: なし Issue: 9
  • DOI: 10.1002/adma.201603131
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] A-site and B-site charge orderings in an s-d level controlled perovskite oxide PbCoO3 (2017)
  • Author(s): Y. Sakai, J. Yang, R. Yu, H. Hojo, I. Yamada, P. Miao, S. Lee, S. Torii, T. Kamiyama, M. Lezaic, G. Bihlmayer, M. Mizumaki, J. Komiyama, T. Mizokawa, H. Yamamoto, T. Nishikubo, Y. Hattori, K. Oka, Y. Yin, J. Dai, W. Li, S. Ueda, A. Aimi, D. Mori, Y. Inaguma, Z. Hu, T. Uozumi, C. Jin, Y. Long, and M. Azuma
  • Journal Title: J. Am. Chem. Soc. Volume: 139 Issue: 12 Pages: 4574-4581
  • DOI: 10.1021/jacs.7b01851
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Enhanced Piezoelectric Response due to Polarization Rotation in Cobalt-Substituted BiFeO 3 Epitaxial Thin Films (2016)
  • Author(s): Keisuke Shimizu, Hajime Hojo, Yuichi Ikuhara, and Masaki Azuma
  • Journal Title: Advanced Materials Volume: 28 Issue: 39 Pages: 8639-8644
  • DOI: 10.1002/adma.201602450
  • Peer Reviewed
• [Journal Article] High-Temperature Monoclinic Cc Phase with Reduced c/a Ratio in Bi- based Perovskite Compound Bi2ZnTi1－xMnxO6 (2016)
  • Author(s): Runze Yu, Narumi Matsuda, Ken Tominaga, Keisuke Shimizu, Hajime Hojo, Yuki Sakai, Hajime Yamamoto, Kengo Oka, and Masaki Azuma
  • Journal Title: Inorganic Chemistry Volume: 55 Issue: 12 Pages: 6124-6129
  • DOI: 10.1021/acs.inorgchem.6b00618
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Glassy Distribution of Bi3+/Bi5+ in Bi1－xPbxNiO3 and Negative Thermal Expansion Induced by Intermetallic Charge Transfer (2016)
  • Author(s): Kiho Nakano, Kengo Oka, Tetsu Watanuki, Masaichiro Mizumaki, Akihiko Machida, Akane Agui, Hyunjeong Kim, Jun Komiyama, Takashi Mizokawa, Takumi Nishikubo, Yuichiro Hattori, Shigenori Ueda, Yuki Sakai, and Masaki Azuma
  • Journal Title: Chemistry of Materials Volume: 28 Issue: 17 Pages: 6062-6067
  • DOI: 10.1021/acs.chemmater.6b01160
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Room temperature ferromagnetism in Co substituted BiFeO3 induced by spin structure change (2017)
  • Author(s): M. Azuma, H. Hojo, R. Kawabe, K. Shimizu, H. Yamamoto、K. Mibu、K. Samanta and T. Saha-Dasgupta
  • Organizer: Indo-US Bilateral Workshop on Physics and Chemistry of Oxides: Theory meets Experiment
  • Place of Presentation: コルコタ
  • Year and Date: 2017-01-03
  • Int'l Joint Research / Invited
• [Presentation] Enhanced piezoelectric response due to polarization rotation in cobalt-substituted BiFeO3 epitaxial thin films (2016)
  • Author(s): 清水 啓佑
  • Organizer: 2016MRS Fall meeting
  • Place of Presentation: ボストン
  • Year and Date: 2016-11-27
  • Int'l Joint Research
• [Presentation] Bi系ペロブスカイト圧電体における分極回転 (2016)
  • Author(s): 東 正樹・清水啓祐・北條元・松田奈瑠美・于潤澤・富永健・岡研吾
  • Organizer: 日本セラミックス協会 第29回秋季シンポジウム
  • Place of Presentation: 広島大学
  • Year and Date: 2016-09-07
  • Invited
• [Presentation] 単斜晶 BiFeBiFe 1-xGa xO3の圧電特性の配向依存特性 (2016)
  • Author(s): 清水 啓佑、北條 元、東 正樹
  • Organizer: 誘電体・磁性体若手夏の学校
  • Place of Presentation: ルーセントタカミヤ
  • Year and Date: 2016-08-26
• [Presentation] Spin structure change and magnetoelectric effect in BiFe1-xCoxO3 (2016)
  • Author(s): 山本 孟
  • Organizer: Gordon Research Conference 2016 Multiferroic & Magnetoelectric Materials
  • Place of Presentation: Lewiston
  • Year and Date: 2016-08-07
  • Int'l Joint Research
• [Presentation] Bi2ZnTiO6 薄膜の結晶構造とその誘電特性 (2016)
  • Author(s): 富永健・北條元・東正樹
  • Organizer: 第63回応用物理学会春季学術講演会
  • Place of Presentation: 東工大大岡山キャンパス
  • Year and Date: 2016-03-19
• [Presentation] c/a が抑制されたペロブスカイト Bi2ZnTi1-xMnxO6 (2016)
  • Author(s): 松田奈瑠美，于潤澤，富永健，清水啓佑，北條元，東正樹，酒井雄樹，岡研吾
  • Organizer: 日本セラミックス協会 2016年年会
  • Place of Presentation: 早稲田大学
  • Year and Date: 2016-03-14
• [Presentation] Fabrication of novel lead-free ferroelectric Bi2ZnTi1-xMnxO6 thin film (2015)
  • Author(s): Ken Tominaga, Narumi Matsuda, Hajime Hojo, Keisuke Shimizu and Masaki Azuma
  • Organizer: 第17回 日米誘電体・圧電体セラミックスセミナー
  • Place of Presentation: 長野県 ホテル ブエナビスタ
  • Year and Date: 2015-11-15
• [Presentation] Newly found piezoelectric perovskite compound Bi2ZnTi1-xMnxO6 with suppressed c/a ratio (2015)
  • Author(s): N.Matsuda , R.Yu, K. Tominaga, H.Hojo, K.Oka, Y.Sakai, M.Azuma
  • Organizer: ＳＴＡＣ－９
  • Place of Presentation: エポカルつくば
  • Year and Date: 2015-10-19
• [Presentation] c/a を抑制したペロブスカイト圧電体 Bi2Zn1-xNixTi1-yMnyO6 (2015)
  • Author(s): 松田奈瑠美、于潤澤、北條元、東正樹、酒井雄樹、岡研吾
  • Organizer: 日本セラミックス協会 第28回秋季シンポジウム
  • Place of Presentation: 富山大学
  • Year and Date: 2015-09-16
• [Remarks] 電気分極の回転による圧電特性の向上を確認―圧電メカニズムを実験で解明、非鉛材料の開発に道―
  • URL: http://www.titech.ac.jp/news/2016/035983.html
• [Remarks] 室温で強磁性・強誘電性が共存した物質を実現―低消費電力・超高密度磁気メモリー開発に道―
  • URL: http://www.titech.ac.jp/news/2016/037073.html