Cation-mediated interaction and weak ferromagnetism in Fe3O2BO3

Authors
Guimaraes, RB Mir, M Fernandes, JC Continentino, MA Borges, HA Cernicchiaro, G Fontes, MB Candela, DRS Baggio-Saitovitch, E
Citation
Rb. Guimaraes et al., Cation-mediated interaction and weak ferromagnetism in Fe3O2BO3, PHYS REV B, 60(9), 1999, pp. 6617-6622
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
60
Issue
9
Year of publication
1999
Pages
6617 - 6622
Database
ISI
SICI code
0163-1829(19990901)60:9<6617:CIAWFI>2.0.ZU;2-S
Abstract
The oxyborates show a variety of interesting physical behavior associated w ith the existence of low dimensional units in their crystalline structure. In this paper we present transport, x-ray, magnetic, and Mossbauer spectros copy measurements in homometallic ludwigites. These results give evidence o f charge localization and reveal an unusual magnetic behavior. We observe t he existence of a reentrant weak ferromagnetism as well as the coexistence of paramagnetic and antiferromagnetic spins in Fe3O2BO3. [S0163-1829(99)095 33-8].