2D DYNAMIC EXPONENT DERIVED FROM CUMN SPIN-GLASS FILMS

Authors
DJURBERG C MATTSSON J NORDBLAD P HOINES L COWEN JA
Citation
C. Djurberg et al., 2D DYNAMIC EXPONENT DERIVED FROM CUMN SPIN-GLASS FILMS, Journal of magnetism and magnetic materials, 140, 1995, pp. 1721-1722
Citations number
9
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
140
Year of publication
1995
Part
3
Pages
1721 - 1722
Database
ISI
SICI code
0304-8853(1995)140:<1721:2DEDFC>2.0.ZU;2-F
Abstract
The slowing down of the magnetic relaxation of thin multilayered CuMn spin glass films on approaching, T = 0 K, is investigated using SQUID magnetometry. In 2d spin glasses the slowing down follows a generalise d Arrhenius law, log(t/t(0)) proportional to T--(1+psi nu), with a spi n glass transition at 0 K. Magnetically decoupled films of thickness l ess than or equal to 30 Angstrom A are found to exhibit 2d critical be haviour and the dynamical exponent psi nu = 0.9 is determined.