Magnetic susceptibility investigation of NiO-Bi2O3-GeO2 glasses

Authors
Ardelean, I
Citation
I. Ardelean, Magnetic susceptibility investigation of NiO-Bi2O3-GeO2 glasses, MOD PHY L B, 15(16), 2001, pp. 523-527
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
MODERN PHYSICS LETTERS B
ISSN journal
02179849 → ACNP
Volume
15
Issue
16
Year of publication
2001
Pages
523 - 527
Database
ISI
SICI code
0217-9849(20010710)15:16<523:MSIONG>2.0.ZU;2-#
Abstract
Magnetic susceptibility investigations of xNiO . (1 - x)[Bi2O3 . GeO2] glas ses with 0 < x less than or equal to 40 mol% are reported. The effective ma gnetic moment values suggest that the Ni2+ ions are predominantly tetrahedr al coordinated in low NiO content glasses, whereas in higher NiO content gl asses the Ni2+ ions are located in. octahedral sites. Also, paramagnetic Cu rie temperatures indicate that the Ni2+ ions participate at the superexchan ge interaction of the antiferromagnetic type for x > 10 mol%.