Critical Temperature of Randomly Diluted Two-Dimensional Heisenberg Ferromagnet, K_2Cu_xZn_<(1-x)>F_4
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概要
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The susceptibility of randomly diluted two-dinaemasional Ileisenberg-like fer-romagnet K.CU.ZI1(1-.)F4 was measured down to 50mK, using the 'He-'liedilution refrigerator and a SQUID magnetometer. The ferromagnetic criticaltemperature T.(x) was obtained for ,X"=0.98, 0.94, 0.85, 0.82, 0.68, 0.60, 0.54,0.50 and 0.42. The value of [1/7p(I)] [(d/d,v)l.(.v)].=. was approximately 3.0. Thecritical temperature versus x curve exhibits a noticeable tail near the criticalconcentration, which may stem fronx the secot'rd uaearest-neighbor interaction.The critical concentration .x., below which concentration there is no long rangeorder down to 7'=0K, was estimated to be 0.45 -0.50. The susceptibility ofsample with ,v=O.42 behaves as if it obeys the Curie law downa to 50 mK.
- 社団法人日本物理学会の論文
- 1980-09-15
著者
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HASEDA Taiichiro
Department of Physics, Faculty of Science, Kyoto University
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YAMADA Isao
Department of Physics, Faculty of Science, Chiba University
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Yamada Isao
Department Of Communications And Integrated Systems Tokyo Institute Of Technology
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Yamada Isao
Department Of Physics Faculty Of Science Chiba University
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OKUDA Yuichi
Department of Applied Physics, Tokyo Institute of Technology
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TOHI Yasuto
Department of Material Physics,Faculty of Engineering Science,Osaka University
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Okuda Yuichi
Department Of Material Physics Faculty Of Engineering Science Osaka University:the Institute For Sol
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Okuda Yuichi
Department Of Applied Physics Faculty Of Science Tokyo Institute Of Technology
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Tohi Yasuto
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Haseda Taiichiro
Department Of Applied Physics Fuculty Of Engineering Ibaraki University
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Yamada Isao
Departmen Of Communications And Integrated Systems Tokyo Institute Of Technology
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