EVIDENCE FOR MICROWAVE-INDUCED RECRYSTALLISATION IN NiZn FERRITES

A series of ferrites of composition Ni1-xZnxFe2O4 (x = 0-1) was prepared by calcining the mixed oxides at 1100 C, followed by microwave sintering at 1275 C for 30 min. The specimens were then subjected to microwave H-field irradiation for 90 s, and characterised by XRD and Mossbauer spectroscopy. Th...

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Bibliographic Details
Published in:Materials chemistry and physics 2007-01, Vol.101 (2/3), p.410-414
Main Authors: Sorescu, M, Diamandescu, L, Ramesh, P D, Roy, R, Daly, A, Bruno, Z
Format: Article
Language:English
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Summary:A series of ferrites of composition Ni1-xZnxFe2O4 (x = 0-1) was prepared by calcining the mixed oxides at 1100 C, followed by microwave sintering at 1275 C for 30 min. The specimens were then subjected to microwave H-field irradiation for 90 s, and characterised by XRD and Mossbauer spectroscopy. The lattice constant increased more slowly with increasing x when the samples were subjected to H-field irradiation. It was concluded that microwave-induced recrystallisation occurred over the compositional range x = 0.4-0.6. 10 refs.
ISSN:0254-0584