Magnetization-polarization cross-control near room temperature in hexaferrite single crystals

10 Apr 2019  ·  Kocsis Vilmos, Nakajima Taro, Matsuda Masaaki, Kikkawa Akiko, Kaneko Yoshio, Takashima Junya, Kakurai Kazuhisa, Arima Taka-hisa, Kagawa Fumitaka, Tokunaga Yusuke, Tokura Yoshinori, Taguchi Yasujiro ·

Mutual control of the electricity and magnetism in terms of magnetic (H) and electric (E) fields, the magnetoelectric (ME) effect, offers versatile low power-consumption alternatives to current data storage, logic gate, and spintronic devices. Despite its importance, E-field control over magnetization (M) with significant magnitude was observed only at low temperatures... Here we have successfully stabilized a simultaneously ferrimagnetic and ferroelectric phase in a Y-type hexaferrite single crystal up to T=450K and demonstrated the reversal of large non-volatile M by E field close to room temperature. Manipulation of the magnetic domains by E field is directly visualized at room temperature by using magnetic force microscopy. The present achievement provides an important step towards the application of bulk ME multiferroics. read more

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Strongly Correlated Electrons Materials Science