Unexpected magnetic behavior in amorphous Co90Sc10 alloy

被引：12

作者：

Ghafari, M. ^{[1
,2
]}

Sakurai, Y. ^{[3
]}

Peng, G. ^{[1
]}

Fang, Y. N. ^{[1
]}

Feng, T. ^{[1
]}

Hahn, H. ^{[1
,2
,4
]}

Gleiter, H. ^{[1
,2
]}

Itou, M. ^{[3
]}

Kamali, S. ^{[5
]}

机构：

[1] Nanjing Univ Sci & Technol, Herbert Gleiter Inst Nanosci, Nanjing 210094, Jiangsu, Peoples R China

[2] Karlsruhe Inst Technol, Inst Nanotechnol, D-76344 Eggenstein Leopoldshafen, Germany

[3] SPring 8, Japan Synchrotron Radiat Res Inst JASRI, Sayo, Hyogo, Japan

[4] Tech Univ Darmstadt, Inst Mat Sci, KIT TUD Joint Res Lab Nanomat, D-64287 Darmstadt, Germany

[5] Univ Tennessee, Inst Space, Dept Mech Aerosp & Biomed Engn, Tullahoma, TN 37388 USA

来源：

APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 13期

关键词：

FE;

D O I：

10.1063/1.4932113

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An amorphous alloy Co90Sc10 has been prepared by rapid quenching from the melt. The results of magnetization measurements show that this alloy has the highest Curie temperature reported for any amorphous transition metal based alloys. Furthermore, for a Co based amorphous alloy, the magnetic moment is remarkably high. Moreover, the alloy exhibits soft magnetic properties. Based on the findings, amorphous Co90Sc10 appears to be an attractive candidate for applications as a soft magnetic material. The temperature dependence of the reduced magnetization can be described by the Bloch power law. The results show that the B coefficient of the amorphous Co90Sc10 alloy, which is a measure of the rigidity of spin waves, exhibits the lowest value observed until now for any amorphous alloy and is comparable to crystalline alloys. It is found that the Sc atoms in the Co90Sc10 alloy lead to an increase of the itinerant spin moment of Co atoms, and, in contrast to this behaviour, to a decrease of the local 3d-electrons of Co. (C) 2015 AIP Publishing LLC.

引用

页数：4

共 14 条

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