Impurity Spin resonance in Antiferromagnetic CoCl_22H_2O
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概要
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Electron spin resonance of Mn^<2+> ions in antiferromagnetic CoCl_22H_2O was investigated using microwaves and pulsed magnetic fields. The results indicate that the Mn^<2+> ion couples with surrounding Co spins by relatively weak exchange interactions and the effective spin Hamiltonian can be written by H=g^<0μB>(H_0+H_E)S_0+DS^2_<0z>, where the first term represents the Zeeman energy of the impurity spin S_0 under an external magnetic field H_0 and the resultant effective field H_E coming from the neighboring Co spins. By analyzing the experimental results, three exchange constants J_0', J_1' and J_2' are obtained as J_0'(F)=0.59±0.04cm^<-1>, J_1'(AF)=0.73±0.02cm^<-1> and J_2'(AF)=0.23±0.03cm^<-1>, where F and AF mean the ferromagnetic and antiferromagnetic coupling, respectively. D was determined to be -0.13±0.01cm^<-1>.
- 社団法人日本物理学会の論文
- 1968-09-15
著者
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DATE Muneyuki
Department of Physics, Faculty of Science, Osaka University
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FUJII Nobuo
Department of Electrical and Electronic Systems Engineering, Faculty of Information Science and Elec
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MOTOKAWA Mitsuhiro
Department of Physics,Faculty of Science,Kobe University
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Date Muneyuki
Department Of Physics Faculity Of Science Osaka University
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Motokawa Mitsuhiro
Department Of Material Science Japan Advanced Institute Of Science And Technology (jaist)
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Fujii Nobuo
Department Of Civil Engineering
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Fujii Nobuo
Department Of Physics Faculty Of Science Osaka University:(present Address) Division Of Scientific I
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MOTOKAWA Mitsuhiro
Department of Physics, Faculty of Science, Osaka University
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