Mossbauer studies on the spiral antiferromagnetic coupling in iron oxychloride

被引：8
|
作者：
Dai, YD
Yu, Z [1 ]
He, Y
Huang, HB
Shao, T
Lin, J
Ali, AM
Jiang, ZY
Hsia, YF
机构：
[1] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
[2] Nanjing Univ, Inst Coordinat Chem, State Key Lab Coordinat Chem, Nanjing 210093, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2002年 / 358卷 / 5-6期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1016/S0009-2614(02)00647-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Fe-57 Mossbauer spectroscopy has been used to study the noncolinear spiral antiferromagnetic coupling in FeOCl. The paramagnetic to antiferromagnetic transition occurs at 85 +/- 1 K. Our Mossbauer studies confirm that the preferential orientations of the spin of Fe3+ which are crystallographically of equivalent sites are parallel to the b and C axes with varied timescale of spin-spin relaxation as a result of competition among the intralayer antiferromagnetic superexchange coupling. ferromagnetic direct exchange coupling, and mixed interlayer dipolar-dipolar interaction. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：473 / 478
页数：6
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