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TRANSFORMATION STUDIES OF M-TYPE TO W-TYPE HEXAFERRITE IN BAFE12-2XCO3XO19

DSpace at IIT Bombay

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Title TRANSFORMATION STUDIES OF M-TYPE TO W-TYPE HEXAFERRITE IN BAFE12-2XCO3XO19
 
Creator MANDAL, SK
SINGH, K
BAHADUR, D
 
Description Samples of general formula BaFe12-2xCo3xO19 (x=0.1, 0.3, 0.5) have been synthesized by ceramic as well as citrate gel routes. The X-ray diffraction patterns indicate that M-type phase forms for x=0.1, while W-type phase is favourable for x=0.3 and 0.5. The results tor x=0.3 are particularly interesting. While the X-ray diffraction data show evidence of a monophasic W-type hexaferrite, the magnetic, thermal and microstructural investigations indicate a secondary phase presumably at grain boundaries. Transformation of M- to W-type hexaferrite has been explained in terms of different possibilities such as nucleation of secondary phases, formation of vacancies and different site occupation of ions in the structure.
 
Publisher CHAPMAN HALL LTD
 
Date 2011-07-20T07:17:51Z
2011-12-26T12:51:21Z
2011-12-27T05:37:58Z
2011-07-20T07:17:51Z
2011-12-26T12:51:21Z
2011-12-27T05:37:58Z
1994
 
Type Article
 
Identifier JOURNAL OF MATERIALS SCIENCE, 29(14), 3738-3742
0022-2461
http://dx.doi.org/10.1007/BF00357342
http://dspace.library.iitb.ac.in/xmlui/handle/10054/5392
http://hdl.handle.net/10054/5392
 
Language en