Magnetic Equations of State of Heisenberg Ferromagnets, EuS and Its Sr-Diluted Derivatives, in a High Field Region
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概要
- 論文の詳細を見る
Magnetization, M, of EuS and Eu_<1-x>Sr_xS (x≤0.4) was measured below 90 K in an external magnetic field up to 150 kOe. It is shown that M in the paramagnetic region is well expressed by a Brillouin function for S=7/2, with an effective field H+λM. Even at temperatures below asymptotic Curie temperature, magnetization approaches the Brillouin function with increasing field strength. Moreover, it is found that magnetization scaled by (T-T_c)^b can be expressed as a universal function of magnetic field scaled by (T-T_c)^<b+c>. Here, T_c is the ferromagnetic Curie point. Scaling exponents, b and c, are very different from those in the critical region. The exponent c is about 1.15 and independent of x whereas b is 0.14 for EuS and decreases rapidly with increasing x, proportionally to T_c.
- 社団法人日本物理学会の論文
- 1995-11-15
著者
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KITA Eiji
Institute of Applied Physics, University of Tsukuba
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Nakagawa Yasuaki
Institute for Materials Research, Tohoku University
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KATO Harukazu
Faculty of Science, Kochi University
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KOHN Kay
Department of Physics, Waseda University
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Nakagawa Yasuaki
Department of Medicine and Clinical Science, Kyoto University Graduate School of Medicine
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Kohn K
Department Of Physics Waseda University
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Kohn Kay
Department Of Applied Physics School Of Science And Engineering Waseda University
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Kita E
Tsukuba Univ. Tsukuba
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Kato Hiroo
National Institute For Minamata Disease
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Kato H
Department Of Chemistry Graduate School Of Science Kyoto University
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Siratori K
Kyushu Univ. Fukuoka
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Siratori Kiiti
Institute Of Materials Structure Science High Energy Accelerator Research Organization
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Siratori Kiiti
Department Of Physics Osaka University
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Shiratori K
Kyushu Univ. Fukuoka
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Siratori Kiiti
Department Of Physics Faculty Of Science Osaka University
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Kato H
Faculty Of Science Kwansei-gakuin University
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KATO Hiroaki
Department of Urology
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Kato H
National Institute For Minamata Disease
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Kita Eiji
Institute Of Applied Physics University Of Tukuba
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Nakagawa Y
Tohoku Univ. Sendai
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Nakagawa Y
Himeji Inst. Technol. Ako‐gun
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Nakagawa Y
Institute For Materials Research Tohoku University
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Nakagawa Yasuaki
Department Of Electronics Tohoku Institute Of Technology
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Siratori Kiiti
Depatment Of Physics Faculty Of Science Kyusyu University
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Nakagawa Yasuaki
The Research Institute For Iron Steel And Other Metals Tohoku University
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Kato H
Kochi Univ. Kochi
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Kohan Kay
Department Of Physics Waseda University
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Kita Eiji
Institute For Applied Physics Tsukuba University
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Kohn Key
Department Of Physics Waseda University
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Kato Hiroaki
Department Of Agricultural Chemistry Yamagata University
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