Magnetic Ordering in Relation to the Room-Temperature Magnetoelectric Effect of Sr 3 Co 2 Fe 24 O 41
2011; American Physical Society; Volume: 106; Issue: 8 Linguagem: Inglês
10.1103/physrevlett.106.087201
ISSN1092-0145
AutoresMinoru Soda, Taishi Ishikura, Hiroyuki Nakamura, Yusuke Wakabayashi, T. Kimura,
Tópico(s)Advanced Condensed Matter Physics
ResumoThe origin of a room-temperature magnetoelectric (ME) effect has been examined by means of neutron powder diffraction measurements for a Z-type hexaferrite Sr(3)Co(2)Fe(24)O(41). 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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