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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/6751

Title: MAGNETIC-PROPERTIES OF AS2O3-DOPED AND SB2O3-DOPED BA-M HEXAGONAL FERRITES PREPARED BY THE SOL-GEL METHOD
Authors: BRAHMA, P
GIRI, AK
CHAKRAVORTY, D
ROY, M
BAHADUR, D
Keywords: glass
crystallization
bafe12o19
series
Issue Date: 1992
Publisher: ELSEVIER SCIENCE BV
Citation: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 117(1-2), 163-168
Abstract: Ba-M hexagonal ferrites with As2O3 and Sb2O3 doping have been prepared in the composition series BaO.(6- x)Fe2O3 .xM2O3 (M = As or Sb) with 0 less-than-or-equal-to x less-than-or-equal-to 0.4 by the sol-gel route. The precursor sol is prepared by using barium acetate and the chlorides of iron and arsenic/antimony respectively. Pelletized powders of these hexaferrites are sintered in the temperature range 1100-1500 K for a period extending to 3 h. The grain sizes in the samples range from 1 to 6 mum. The magnetization and coercivity change as a function of the dopant concentration of arsenic and antimony oxides. A cationic distribution scheme with As3+ and Sb3+ ions occupying the octahedral sites in the R block and the R-S boundary respectively of the Ba-M hexagonal crystal structure can explain the magnetization characteristics of these samples.
URI: http://dx.doi.org/10.1016/0304-8853(92)90306-9
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6751
http://hdl.handle.net/10054/6751
ISSN: 0304-8853
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