ASYMPTOTIC AND LEADING CORRECTION-TO-SCALING SPECIFIC-HEAT CRITICAL EXPONENTS AND AMPLITUDES FOR QUENCH-DISORDERED FERROMAGNETS FROM RESISTIVITY MEASUREMENTS

被引：30

作者：

KAUL, SN

RAO, MS

机构：

[1] School of Physics, University of Hyderabad, Central University Post Office, Hyderabad 500134, Andhra Pradesh

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.43.11240

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report an experimental determination of the asymptotic and leading correction-to-scaling specific-heat critical exponents and amplitudes for quench-disordered ferromagnets. The renormalization-group estimates, available for some of the amplitude ratios only, are in agreement with the presently determined values. The scaling relation-alpha+ = alpha- is obeyed and the asymptotic amplitude ratio A+/A- possesses a value characteristic of a three-dimensional isotropic nearest-neighbor Heisenberg ferromagnet with isotropic long-range dipolar interactions.

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页码：11240 / 11248

页数：9

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