Thermoremanence anomaly in Fe-Zr(B,Cu) Invar metallic glasses: Volume expansion induced ferromagnetism

Authors
Hernando, A Crespo, P Castano, FJ Arcas, J Multigner, M Barandiaran, JM Fernandez-Barquin, L
Citation
A. Hernando et al., Thermoremanence anomaly in Fe-Zr(B,Cu) Invar metallic glasses: Volume expansion induced ferromagnetism, PHYS REV B, 61(5), 2000, pp. 3219-3222
Citations number
18
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
10980121 → ACNP
Volume
61
Issue
5
Year of publication
2000
Pages
3219 - 3222
Database
ISI
SICI code
1098-0121(20000201)61:5<3219:TAIFIM>2.0.ZU;2-E
Abstract
We report the existence of a thermally induced sharp increase of thermorema nence around the Curie temperature of Invar-like Fe-Zr(B,Cu) soft magnetic glasses. Neutron-diffraction measurements indicate that a true enhancement of the average local magnetic moment, rather than only a change in the doma in structure, occurs. Such enhancement has been tentatively attributed to t he increasing volume expansion that takes place beyond the Curie temperatur e and reinforces ferromagnetism in some low-density clusters.