NMR of Co^<59> in an Approximate Ising System: CoCl_2・2H_2O
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概要
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Nuclear Magnetic Resonance (NMR) of Co^<59> has been investigated in the three metamagnetic phases of CoCl_2・2H_2O at liquid helium temperatures. The hyperfine field in zero external field at 0 K was found to be +421.1±0.4 kOe, which agrees well with the calculated value where the orbital contribution is dominant. When the external field H_0 was applied parallel to b-axis, the interaction of the nucleus with the electronic moment induced by H_0 was observed to be about 0.29 times the direct coupling with the external field. The jumps of the hyperfine field were also observed as the manifestation of the changes of the exchange interactions of Co^<2+> spin with adjacent linear chains. The most striking feature of the data is the effects of the spin reduction of 0.1∼1% depending on H_0 caused by the magnon bound states in an approximate Ising system to CoCl_2・2H_2O.
- 社団法人日本物理学会の論文
- 1972-04-05
著者
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Nishihara Hironori
Department Of Physics Faculty Of Science Kyoto University
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Hirai Akira
Department Of Internal Medicine Chiba Municipal Hospital
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Yasuoka Hiroshi
Department Of Mathematics And Physics National Defense Academy
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Hirai Akira
Departent Of Materials Science And Engineering Faculty Of Engineering Kyushu Institute Of Technology
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Yasuoka Hiroshi
Department Of Applied Physics National Defense Academy
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