Spin-glass transition in Cu-Al-Mn shape-memory alloys

被引：21

作者：

Obradó, E

Planes, A

Martínez, B

机构：

[1] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Catalonia, Spain

[2] CSIC, Inst Ciencia Mat Barcelona, E-08193 Bellaterra, Catalonia, Spain

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.59.11450

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic properties of a set of Cu-Al-Mn shape-memory alloys are studied. A spin freezing at low temperatures is observed in all cases. It is shown that, whereas this freezing is not a spin-glass transition for the samples with highest Mn content(similar to 9 at. %), such a transition does actually exist in a specimen with 6.3 at. % Mn. For this alloy, the critical exponents related to the transition are obtained from scaling of de and ac susceptibility measurements. Finally, the effects of quenches from different temperatures on the magnetic properties of the same alloy are investigated and discussed. [S0163-1829(99)05017-1].

引用

页码：11450 / 11457

页数：8

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