Longitudinal spin fluctuations in the nearly isotropic ferromagnet CdCr2Se4: Scaling behavior outside the critical region

Authors
Luzyanin, ID Yashenkin, AG Maleyev, SV Zaitseva, EA Khavronin, VP
Citation
Id. Luzyanin et al., Longitudinal spin fluctuations in the nearly isotropic ferromagnet CdCr2Se4: Scaling behavior outside the critical region, PHYS REV B, 60(2), 1999, pp. R734-R737
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
60
Issue
2
Year of publication
1999
Pages
R734 - R737
Database
ISI
SICI code
0163-1829(19990701)60:2<R734:LSFITN>2.0.ZU;2-R
Abstract
The uniform dynamics of nearly isotropic cubic ferromagnet CdCr2Se4 in the ordered phase is investigated. It is found that the longitudinal susceptibi lity behaves as chi(alpha)omega(-rho) with p approximate to 0.28. The low-f requency crossover to omega(-rho) dependence is induced by the internal mag netic field H-i. We attribute the observed anomalous behavior to the influe nce of dipolar forces and propose a description of chi(omega,H-i) in terms of phenomenological scaling.