DOI: 10.1063/1.330179. Scaling of susceptibility and the size of the critical region in an amorphous GdAl spin glass (invited)

Scaling of susceptibility and the size of the critical region in an amorphous GdAl spin glass (invited)

10.1063/1.330179

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

We extend our earlier SQUID magnetometry studies of the susceptibility of amorphous Gd37A63 spin glass to a temperature range 5≤T≤100 K and a field range 0.5≤H&lt;50 000 Oe. This enables us to determine the size of the critical region around the spin glass transition at TG=15.5 K; it extends to approximately 22 K in temperature and 15 000 Oe in field. We show that the range of reduced temperature t=(T−TG)/TG for spin glass critical behavior is determined by the parameter 1/Z1/2, where Z is the number of interacting neighbors, in rough agreement with experiment, and that the field range can be estimated from a crossover relation Hαtφ/2. We also find that nonanalyticity in χ(H) as H→0 persists at all temperatures below TG and argue that this can cause apparent nonanalyticity above TG as well in the presence of sample inhomogeneity.

Bibliography

Malozemoff, A. P., Imry, Y., & Barbara, B. (1982). Scaling of susceptibility and the size of the critical region in an amorphous GdAl spin glass (invited). Journal of Applied Physics, 53(11), 7672â7677.

Authors 3

A. P. Malozemoff (first)
Y. Imry (additional)
B. Barbara (additional)

References 37 Referenced 33

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Dates

Type	When
Created	22 years, 6 months ago (Feb. 14, 2003, 6:21 p.m.)
Deposited	1 year, 6 months ago (Feb. 4, 2024, 8:21 p.m.)
Indexed	1 year, 5 months ago (March 20, 2024, 1:19 a.m.)
Issued	42 years, 10 months ago (Nov. 1, 1982)
Published	42 years, 10 months ago (Nov. 1, 1982)
Published Print	42 years, 10 months ago (Nov. 1, 1982)

Funders 0

None

BibTeX

@article{Malozemoff_1982, title={Scaling of susceptibility and the size of the critical region in an amorphous GdAl spin glass (invited)}, volume={53}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.330179}, DOI={10.1063/1.330179}, number={11}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Malozemoff, A. P. and Imry, Y. and Barbara, B.}, year={1982}, month=nov, pages={7672–7677} }

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