Brahma, P. ; Giri, Anit K. ; Chakravorty, D. ; Roy, M. ; Bahadur, D. (1992) Magnetic properties of As2O3-and Sb2O3-doped Ba-M hexagonal ferrites prepared by the sol-gel method Journal of Magnetism and Magnetic Materials, 117 (1-2). pp. 163-168. ISSN 0304-8853
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0304-8853(92)90306-9
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≤×≤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. Pellitized 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 μm. 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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 64913 |
| Deposited On: | 15 Oct 2011 12:09 |
| Last Modified: | 15 Oct 2011 12:09 |
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