EXCHANGE FRUSTRATION AND TRANSVERSE SPIN FREEZING IN IRON-RICH METALLIC GLASSES

被引：69

作者：

REN, H

RYAN, DH

机构：

[1] Centre for the Physics of Materials, Physics Department, McGill University, Montreal, Que. H3A 2T8

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.51.15885

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic properties of several iron-rich amorphous alloys of the form a-FexT100-x (T=Zr,Hf,Sc; x∼90) have been studied down to 5 K using magnetization measurements and Mössbauer spectroscopy, both with and without an external magnetic field. Two magnetic transitions are observed: first to a collinear magnetic state at Tc, then noncollinearity develops at Txy. Analysis of the composition and temperature dependences of the magnetic ordering allows us to rule out cluster-based models of the behavior. All of our results can be explained in terms of a homogeneous freezing of transverse spin components at Txy leading to a state in which ferromagnetic and spin-glass order coexist. Quantitative agreement with Monte Carlo simulations of a bond-frustrated Heisenberg system is observed. © 1995 The American Physical Society.

引用

页码：15885 / 15897

页数：13

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