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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur
KFM 10: Multiferroics and Magnetoelectric Coupling II (joint session MA/KFM)
KFM 10.1: Vortrag
Mittwoch, 18. März 2020, 15:00–15:15, HSZ 401
Switching of magnetoelectric states in Y-type hexaferrite single crystals — •Vilmos Kocsis1, Taro Nakajima1, Masaaki Matsuda2, Akiko Kikkawa1, Yoshio Kaneko1, Junya Takashima1,3, Kazuhisa Kakurai1,4, Taka-hisa Arima1,5, Yusuke Tokunaga1,5, Yoshinori Tokura1,6, and Yasujiro Taguchi1 — 1RIKEN CEMS, Wako-shi, Japan — 2Oak Ridge National Laboratory, Tennessee, USA — 3Venture Lab TOKYO, Tokyo, Japan — 4CROSS, Tokai, Japan — 5Department of Advanced Materials Science, University of Tokyo, Kashiwa Japan — 6Tokyo College and Department of Applied Physics, University of Tokyo, Tokyo, Japan
In Y-type hexaferrites, magnetic interactions result in a complex phase diagram with non-collinear magnetic phases. The magnetoelectric (ME) properties are mainly dominated by a multiferroic FE3 phase [1,2]. The FE3 phase has been observed both as a metastable and stable phase close to room temperatures [3,4,5] and offers an ideal candidate to study the stability of ME phases and ME states. Here we explore the direct and converse ME effects in Y-type hexaferrites with different Sr doping levels. We demonstrate the isothermal switching between ME states, and discuss these new results as a possible way to measure the stability of the ME state in multiferroic materials. [1] T. Kimura, Ann. Rev. Condens. Matter Phys. 3, 93-110 (2012) [2] T. Kimura et. al., PRL 94, 137201 (2005) [3] S. Hirose et. al., APL 104, 022907 (2014) [4] T. Nakajima et. al., PRB 94 195154 (2016) [5] V. Kocsis et. al., Nat. Comm. 10, 1247 (2019)