EPR AND MAGNETIC-SUSCEPTIBILITY STUDIES OF CR3-DOT-25B(2)O(3)CENTER-DOT-5PBO GLASS MATRIX( IONS IN THE 70TEO(2)CENTER)

Authors
PETEANU M SIMON V MURESAN N ARDELEAN I FILIP S
Citation
M. Peteanu et al., EPR AND MAGNETIC-SUSCEPTIBILITY STUDIES OF CR3-DOT-25B(2)O(3)CENTER-DOT-5PBO GLASS MATRIX( IONS IN THE 70TEO(2)CENTER), JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 13(5), 1997, pp. 374-378
Citations number
38
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
Journal title
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY → ACNP
ISSN journal
10050302
Volume
13
Issue
5
Year of publication
1997
Pages
374 - 378
Database
ISI
SICI code
1005-0302(1997)13:5<374:EAMSOC>2.0.ZU;2-X
Abstract
By using EPR and magnetic susceptibility measurements, the Cr ion dist ribution in the xCr(2)O(3) .(1-x)[70TeO(2) . 25B(2)O(3) . 5PbO] glasse s with O<x less than or equal to 20 mol% was studied. EPR investigatio n evidenced the presence of Cr3+ ions in agreement with the experiment ally obtained atomic magnetic moment values. For concentrations x less than or equal to 3 mol%, the isolated Cr3+ ions coexist with those co upled by dipole-dipole interactions. For x>3 mol%, the Cr3+ ions parti cipate in superexchange interactions and are predominantly antiferroma gnetically coupled.