Pal, M. ; Brahma, P. ; Chakravorty, D. (1994) AC conductivity in bismuth-substituted barium hexaferrites Journal of the Physical Society of Japan, 63 . pp. 3356-3360. ISSN 0031-9015
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Official URL: http://jpsj.ipap.jp/link?JPSJ/63/3356/
Related URL: http://dx.doi.org/10.1143/JPSJ.63.3356
Abstract
Bismuth substituted barium hexaferrites in the composition series BaO·(6-x) Fe2 O3·x Bi2 O3 with 0 < x < 0.5 have been prepared and their electrical conductivity measured over the temperature range 325 to 510 K. The ac conductivity of the samples obeys a relation σ(ω)∼ωs with s having values in the range 0.5 to 0.8. The electrical conductivity is believed to arise due to the creation of Fe2+ sites by the reducing action of Bi3+ ions. The ac conductivity variation is explained on the basis of overlapping-large-polaron-tunnelling (OLPT) mechanism.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Institute of Pure and Applied Physics. |
| ID Code: | 64936 |
| Deposited On: | 15 Oct 2011 12:10 |
| Last Modified: | 15 Oct 2011 12:10 |
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