MOSSBAUER STUDY OF A MODIFIED M-TYPE BA(SR)-FERRITE PREPARED BY ION-EXCHANGE

Authors
KALOGIROU O HAACK G ROHL BR GUNSSER W
Citation
O. Kalogirou et al., MOSSBAUER STUDY OF A MODIFIED M-TYPE BA(SR)-FERRITE PREPARED BY ION-EXCHANGE, Solid state ionics, 63-5, 1993, pp. 528-533
Citations number
11
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical
Journal title
Solid state ionics → ACNP
ISSN journal
01672738
Volume
63-5
Year of publication
1993
Pages
528 - 533
Database
ISI
SICI code
0167-2738(1993)63-5:<528:MSOAMM>2.0.ZU;2-L
Abstract
Ionic exchange with Ba2+(Sr2+) on polycrystalline K+-beta''-ferrite st abilized by Cd2+, at 700-800-degrees-C, results in a phase transition to a ''nonstoichiometric'' Ba (Sr)-hexaferrite. XRD and Mossbauer spec troscopy shows that the exchange derivatives present a defected M-type structure. After annealing at 1000-degrees-C an intergrowth, in a app roximately 4:1 ratio, of Ba(Sr)-hexaferrite and CdFe2O4 is observed.