ORDERED MAGNETIC FRUSTRATION .14. THE MAGNETIC-STRUCTURE OF THE TETRAGONAL BRONZE KMNFEF6

被引:17
作者
LACORRE, P [1 ]
PANNETIER, J [1 ]
FEREY, G [1 ]
机构
[1] UNIV MAINE,CNRS,FLUORURES LAB,URA 449,F-72017 LE MANS,FRANCE
关键词
D O I
10.1016/0304-8853(91)90094-Q
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The magnetic structure of the tetragonal bronze-like KMnFeF6 is solved by means of neutron powder diffraction. The structure (space group Pb' a2') consists of a non-collinear arrangement of spins lying in the (a, b) plane of the crystal cell. Spins belonging to triangular platelets adopt a star arrangement very close to the ideal 120-degrees configuration, whereas the arrangement in square platelets is almost exactly antiparallel. The magnetic structure of KMnFeF6 has been successfully simulated with the program MCMAG by assuming isotropic AF interactions between nearest magnetic neighbours (superexchange interactions).
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页码:331 / 336
页数:6
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