Scaling of Nonlinear Susceptibility in MnCu and GdAl Spin-Glasses

Publisher Website

21 December 1981

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 47 (25) , 1852-1855
https://doi.org/10.1103/physrevlett.47.1852

Abstract

SQUID measurements of susceptibility

χ

versus field

H

are fitted by

χ = χ_{0} - χ_{1} H^{a - 1}

at a given temperature

T

, for two classic spin-glasses: 4.6% Mn in Cu (polycrystalline) and 37% Gd in Al (amorphous).

χ_{1} (T)

shows a much stronger anomaly than

χ_{0} (T)

, while

a (T)

has a minimum at the freezing temperature

T_{f}

. The data can also be scaled according to

χ_{0} - χ = H^{\frac{2}{δ}} f (\frac{(T - T_{f})}{H^{\frac{2}{ϕ}}})

with

δ = 5 \pm 1

and

ϕ = 4.5 \pm 0.5

.

Keywords

This publication has 22 references indexed in Scilit:

Long-time cooling-rate dependence of spin-glass freezing
Physical Review B, 1981
Susceptibility of the $Cu Mn$ spin-glass: Frequency and field dependences
Physical Review B, 1981
On the frequency dependence of the transition temperature in spin glasses
Solid State Communications, 1980
Properties of mictomagnets (spinglasses)
Progress in Materials Science, 1980
Low-dc-field susceptibility of $Cu Mn$ spin glass
Physical Review B, 1979
The susceptibilities of spin glasses
Solid State Communications, 1977
Measurement of the Spin-Glass Order Parameter in Amorphous ${Gd}_{0.37}$ ${Al}_{0.63}$
Physical Review Letters, 1977
Critical properties of a simple soluble spin glass model
Solid State Communications, 1976
Solvable spin systems with random interactions
Physics Letters A, 1976
Random Mixture of the Ising Magnets in a Magnetic Field: Quenched Site and Bond Problems
Progress of Theoretical Physics, 1976