Magnetization Process near the Curie Temperature of a Ferromagnetic Heusler Alloy Co2VGa

被引：0
作者：
H. Nishihara
Y. Furutani
T. Wada
T. Kanomata
K. Kobayashi
R. Kainuma
K. Ishida
T. Yamauchi
机构：
[1] Ryukoku University,Faculty of Science and Technology
[2] Tohoku Gakuin University,Faculty of Engineering
[3] Tohoku University,Graduate School of Engineering
[4] Tohoku University,Institute of Multidisciplinary Research for Advanced Materials
[5] University of Tokyo,Institute for Solid State Physics
来源：
Journal of Superconductivity and Novel Magnetism | 2011年 / 24卷
关键词：
Magnetization process; Curie temperature; Ferromagnet; Heusler alloy; Co; VGa;
D O I：
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学科分类号：
摘要：
The field dependence of the magnetization of a ferromagnetic Heusler alloy Co2VGa has been measured close to the Curie temperature of 358 K up to an applied field of 50 kOe. Results for samples with different Curie temperatures of 351 K are also reported. The critical exponent δ has been determined to be 4.15 (0.05) for both samples. The value is different from either 5 predicted by the spin fluctuation theory by Takahashi or 3 derived by a conventional molecular field theory. Possible origins for the discrepancy from the theories are discussed.
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页码：679 / 681
页数：2
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