Two distinct ferroelectric phases in the multiferroic Y-type hexaferrite Ba2Mg2Fe12O22

被引：50

作者：

Sagayama, Hajime ^{[1
]}

Taniguchi, Kouji ^{[1
]}

Abe, Nobuyuki ^{[1
]}

Arima, Taka-hisa ^{[1
]}

Nishikawa, Yusaku ^{[2
]}

Yano, Shin-ichiro ^{[2
]}

Kousaka, Yusuke ^{[2
]}

Akimitsu, Jun ^{[2
]}

Matsuura, Masato ^{[3
]}

Hirota, Kazuma ^{[3
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

[2] Aoyama Gakuin Univ, Dept Math & Phys, Kanagawa 2298558, Japan

[3] Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, Toyonaka, Osaka 5600043, Japan

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 18期

关键词：

barium compounds; dielectric hysteresis; ferrites; magnesium compounds; magnetic structure; magnetic transitions; multiferroics; neutron diffraction; MAGNETIC-STRUCTURE; (BA1-XSRX)2ZN2FE12O22;

D O I：

10.1103/PhysRevB.80.180419

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic phase diagram of the Y-type hexaferrite Ba2Mg2Fe12O22 has been studied using single-crystal neutron diffraction. The result indicates successive phase transitions where the magnetic modulation wave number changed discontinuously when a magnetic field is applied and the temperature is varied. For the low-temperature spin-driven ferroelectric state, we have found a sixfold structure with q=(0 0 1/2) in weak magnetic fields and a twofold structure with q=(0 0 3/2) in strong magnetic fields between which a first-order transition intervenes accompanied by a hysteresis.

引用

页数：4

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