Mössbauer effect study of Li21+Me4+Fe63+O122−spinels

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Author Saleh, H.A. en_US
Author El Nimr, M.K. en_US
Author Nada, N. en_US
Author Fayek, M. K. en_US
Available date 2009-12-23T10:51:26Z en_US
Publication Date 1986-02 en_US
Citation Saleh, H., Elnimr, M., Nada, N., & Fayek, M. (1986). Mössbauer effect study of Li 2 1+ Me4+Fe 6 3+ O 12 2− spinels. Hyperfine Interactions, 28(1-4), 627–630 en_US
ISSN 0304-3843 (Print) en_US
ISSN 1572-9540 (Online) en_US
URI http://dx.doi.org/10.1007/BF02061526 en_US
URI http://hdl.handle.net/10576/10413 en_US
Abstract Mossbauer effect spectra are obtained for the cubic ferrites Li2 Me Fe6 O12 (where Me4+ is one of the tetravalent elements Ge, Si and Ti) at 78K up to their magnetic transition temperatures. In a rather large temperature range they clearly are a broadened six lines pattern. Each spectrum is successfully analysed to two sets of magnetic hyperfine splitting Zeeman patterns with isomer shifts corresponding to ferric ions in both tetrahedral and octahedral sites. The tendency of the present non-magnetic elements to occupy the octahedral site led to an antiparallel Neel spin structure. Debye and Neel temperatures of these substituted lithium ferrites are determined and their hyperfine parameters are discussed. en_US
Language en en_US
Publisher Baltzer Science Publishers, Baarn/Kluwer Academic Publishers en_US
Subject Physics en_US
Subject Astronomy en_US
Title Mössbauer effect study of Li21+Me4+Fe63+O122−spinels en_US
Type Article en_US

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