Magnetic Susceptibility of Vanadium Difluoride
作者:
J. W. Stout,
H. Y. Lau,
期刊:
Journal of Applied Physics
(AIP Available online 1967)
卷期:
Volume 38,
issue 3
页码: 1472-1473
ISSN:0021-8979
年代: 1967
DOI:10.1063/1.1709673
出版商: AIP
数据来源: AIP
摘要:
Measurements have been made of the magnetic susceptibility of VF2at temperatures between 1° and 300°K. This compound was previously found [J. Appl. Phys.37,966 (1966)] to have the rutile structure and to have a gradual maximum in magnetic heat capacity at 27°K and a sharp heat‐capacity peak at 7.0°K associated with the development of long‐range order. The data were interpreted as indicating that the major exchange interactions between vanadium ions couple together one‐dimensional chains of atoms parallel to thecaxis. We have measured the magnetic susceptibility of powdered samples and of an oriented crystal sample made by stacking together small needle‐like single crystals. The high‐temperature susceptibility data show that the net exchange interactions are antiferromagnetic. There is a gradual maximum in magnetic susceptibility near 40°K, consistent with the development of a large amount of one‐dimensional short‐range order. At 77°K and lower temperature the susceptibility parallel to thecaxis is greater than that perpendicular to this direction.
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