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

被引：14

作者：

Nishihara, H. ^{[1
]}

Furutani, Y. ^{[1
]}

Wada, T. ^{[1
]}

Kanomata, T. ^{[2
]}

Kobayashi, K. ^{[3
]}

Kainuma, R. ^{[4
]}

Ishida, K. ^{[3
]}

Yamauchi, T. ^{[5
]}

机构：

[1] Ryukoku Univ, Fac Sci & Technol, Otsu, Shiga 5202194, Japan

[2] Tohoku Gakuin Univ, Fac Engn, Tagajo, Miyagi 9858537, Japan

[3] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 9808579, Japan

[4] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

[5] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2011年 / 24卷 / 1-2期

关键词：

Magnetization process; Curie temperature; Ferromagnet; Heusler alloy; Co2VGa; NICKEL; BEHAVIOR; EQUATION; POINT; STATE;

D O I：

10.1007/s10948-010-0933-3

中图分类号：

O59 [应用物理学];

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 delta 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.

引用

页码：679 / 681

页数：3

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