FIELD-INDUCED COMMENSURATE INTERMEDIATE PHASES IN HELIMAGNET (BA1-XSRX)2ZN2FE12O22 (X=0.748)

被引:72
|
作者
MOMOZAWA, N [1 ]
YAMAGUCHI, Y [1 ]
机构
[1] TOHOKU UNIV, INST MAT RES, SENDAI, MIYAGI 980, JAPAN
关键词
HEXAGONAL FERRITE; HELIMAGNETIC STRUCTURE; COMMENSURATE INTERMEDIATE PHASE; FAN-LIKE OSCILLATORY STRUCTURE; MAGNETIZATION; NEUTRON DIFFRACTION;
D O I
10.1143/JPSJ.62.1292
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Neutron diffraction and magnetization measurements have been made on single crystal specimens of hexagonal-ferrite helimagnet (Ba1-xSrx)2Zn2Fe12O22 (x=0.748) in a field applied perpendicular to the c-axis. Two types of intermediate phases, intermediate-I and -II, are successively induced by a field, and their magnetic structures are determined by using the Fourier series expansion method. In each phase, the moments order in fanlike oscillatory structures in which there are large and small spin-bunches perpendicular to the c-axis. The magnetization curve and the turn angle of the helix are discussed from exchange interactions.
引用
收藏
页码:1292 / 1304
页数:13
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