On the Para-and Antiferromagnetic States of Cobalt Fluoride
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概要
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The magnetic behaviours of CoF_2 in solid state can satisfactorily be described in terms of Pryce's effective Hamiltonian with Λ_x=1.34・10^<-3>, Λ_y=1.73・10^<-3> and Λ_z=0.19・10^<-3>(cm^<-1>)^<-1>, where c-axis is taken as x-axis and a line connecting Co^<++> and its first neighbours F^- as z-axis. In the paramagnetic regions, X_‖ is of the ordinary type obeying the Curie-Weiss law approximately. Contrariwise, X_⊥ is similar to the paramagnetic susceptibility of ferrimagnetics. These predictions are in good agreement with the experimental results by Stout and Matarrese. X_‖ has a finite value of the order 10^<-2> e.m.u.even at 0°K because of the fact that the magnetic field parallel to c-axis induces a virtual transition from the lowest energy level to a higher one separated by about 10^2cm^<-1>. The value of X_⊥ at 0°K is also computed.
- 理論物理学刊行会の論文
著者
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Nakamura Tuto
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Nakamura Tuto
Department Of Physics Faculty Of Science Kyusyu University
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TAKETA Hiroshi
Research Institute of Science and Industry, Kyusyu University
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Taketa Hiroshi
Research Institute Of Science And Industry Kyusyu University
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