Field-induced incommensurate-to-commensurate phase transition in the magnetoelectric hexaferrite Ba0.5Sr1.5Zn2(Fe1-xAlx)12O22

被引：68

作者：

Lee, Hak Bong ^{[1
]}

Song, Young-Sang ^{[1
]}

Chung, Jae-Ho ^{[1
]}

Chun, Sae Hwan ^{[2
]}

Chai, Yi Sheng ^{[2
]}

Kim, Kee Hoon ^{[2
]}

Reehuis, M. ^{[3
]}

Prokes, K. ^{[3
]}

Mat'as, S. ^{[3
]}

机构：

[1] Korea Univ, Dept Phys, Seoul 136713, South Korea

[2] Seoul Natl Univ, CeNSCMR, Dept Phys & Astron, Seoul 151747, South Korea

[3] Helmholtz Zentrum Mat & Energie, D-14109 Berlin, Germany

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 14期

关键词：

MAGNETIC-STRUCTURE; (BA1-XSRX)2ZN2FE12O22; TEMPERATURE; HELIMAGNET;

D O I：

10.1103/PhysRevB.83.144425

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using neutron diffraction, we investigated the spin structures of magnetoelectric hexaferrite, Ba0.5Sr1.5Zn2(Fe1-xAlx)(12)O-22 (x = 0.08) under a magnetic field (H perpendicular to c). When the crystal was cooled in a zero field, longitudinal spin cones were observed at low temperatures. These incommensurate phases, however, were replaced by the commensurate phase [ k(1) = (0,0,3/2)] when the ferroelectricity was induced by an external field perpendicular to the c axis. Magnetic structure refinement confirms that this commensurate order is compatible with the spin-current polarization. We argue that planar magnetic anisotropy plays an important role in determining the magnetic structure that is responsible for its magnetoelectricity.

引用

页数：6

共 19 条

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