Magnetic Ordering in Relation to the Room-Temperature Magnetoelectric Effect of Sr3Co2Fe24O41

被引:143
作者
Soda, Minoru [1 ]
Ishikura, Taishi [1 ]
Nakamura, Hiroyuki [1 ]
Wakabayashi, Yusuke [1 ]
Kimura, Tsuyoshi [1 ]
机构
[1] Osaka Univ, Div Mat Phys, Grad Sch Engn Sci, Osaka 5608531, Japan
关键词
Bragg reflection - Conical spin structure - Dzyaloshinskii-moriya - Electric polarization - Magnetic field dependences - Neutron powders - Propagation vector - Z-type hexaferrite;
D O I
10.1103/PhysRevLett.106.087201
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The origin of a room-temperature magnetoelectric (ME) effect has been examined by means of neutron powder diffraction measurements for a Z-type hexaferrite Sr3Co2Fe24O41. The temperature and magnetic-field dependence of the electric polarization P and several magnetic Bragg reflections show that a commensurate magnetic order with a (0,0,1) propagation vector has an intimate connection with the ME effect. The room-temperature ME effect can be understood in terms of the appearance of P which is induced by a transverse conical spin structure through the inverse Dzyaloshinskii-Moriya mechanism in analogy with Y-type hexaferrites.
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页数:4
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