中国物理B ›› 2020, Vol. 29 ›› Issue (3): 37701-037701.doi: 10.1088/1674-1056/ab696c

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Magnetoelectric effects in multiferroic Y-type hexaferrites Ba0.3Sr1.7CoxMg2-xFe12O22

Yanfen Chang(畅艳芬), Kun Zhai(翟昆), Young Sun(孙阳)   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 School of Physical Science, University of Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2019-12-05 修回日期:2020-01-06 出版日期:2020-03-05 发布日期:2020-03-05
  • 通讯作者: Young Sun E-mail:youngsun@iphy.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 51725104) and Beijing Natural Science Foundation, China (Grant No. Z180009).

Magnetoelectric effects in multiferroic Y-type hexaferrites Ba0.3Sr1.7CoxMg2-xFe12O22

Yanfen Chang(畅艳芬)1,2, Kun Zhai(翟昆)1,2, Young Sun(孙阳)1,2   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 School of Physical Science, University of Chinese Academy of Sciences, Beijing 100190, China
  • Received:2019-12-05 Revised:2020-01-06 Online:2020-03-05 Published:2020-03-05
  • Contact: Young Sun E-mail:youngsun@iphy.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 51725104) and Beijing Natural Science Foundation, China (Grant No. Z180009).

摘要: Y-type hexaferrites with tunable conical magnetic structures are promising single-phase multiferroics that exhibit large magnetoelectric effects. We have investigated the influence of Co substitution on the magnetoelectric properties in the Y-type hexaferrites Ba0.3Sr1.7CoxMg2-xFe12O22 (x = 0.0, 0.4, 1.0, 1.6). The spin-induced electric polarization can be reversed by applying a low magnetic field for all the samples. The magnetoelectric phase diagrams of Ba0.3Sr1.7CoxMg2-xFe12O22 are obtained based on the measurements of magnetic field dependence of dielectric constant at selected temperatures. It is found that the substitution of Co ions can preserve the ferroelectric phase up to a higher temperature, and thus is beneficial for achieving single-phase multiferroics at room temperature.

关键词: multiferroic, magnetoelectric effect, hexaferrite

Abstract: Y-type hexaferrites with tunable conical magnetic structures are promising single-phase multiferroics that exhibit large magnetoelectric effects. We have investigated the influence of Co substitution on the magnetoelectric properties in the Y-type hexaferrites Ba0.3Sr1.7CoxMg2-xFe12O22 (x = 0.0, 0.4, 1.0, 1.6). The spin-induced electric polarization can be reversed by applying a low magnetic field for all the samples. The magnetoelectric phase diagrams of Ba0.3Sr1.7CoxMg2-xFe12O22 are obtained based on the measurements of magnetic field dependence of dielectric constant at selected temperatures. It is found that the substitution of Co ions can preserve the ferroelectric phase up to a higher temperature, and thus is beneficial for achieving single-phase multiferroics at room temperature.

Key words: multiferroic, magnetoelectric effect, hexaferrite

中图分类号:  (Ferroelectricity and antiferroelectricity)

  • 77.80.-e
75.85.+t (Magnetoelectric effects, multiferroics) 75.50.-y (Studies of specific magnetic materials)