Proton Spin-Lattice Relaxation in the Three Metamagnetic States of CoCl_2・2H_2O
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概要
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The field-, temperature- and angular dependences of T. of proton in the threemetamagnetic states of Ising-like one-dimensional antiferromagnet CoCI.?2lI.0have been studied in view of two different types of relaxation mechanisms ; thetwo-magnon process and the relaxation process due to scattering between one-magnon excitation and two-magnon bound state. The calculations for the formerprocess based on the small-k approximation are in good agreement with theexperimental results in the antiferromagnetic state with the external fields lessthan about 23 k0e. The experimental results in higher fields (223 k0e) overthe three metamagnetic states are reasonably interpreted by the latter process,which predicts an approximate equation T7" -exp ( -2gjjjt.H.../k.T) whereH.(( is an effective field acting on effective ferromagnetic chains in each of thethree states.
- 社団法人日本物理学会の論文
- 1983-07-15
著者
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GOTO Takao
Department of Physics,College of Liberal Arts,Kyoto University
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Goto Takao
Department Of Physics College Of Liberal Arts Kyoto University
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Goto Takao
Department Of Applied Physics Faculty Of Technology Tohoku Gakuin University
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