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

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contributor.author Saleh, H.A. en_US
contributor.author El Nimr, M.K. en_US
contributor.author Nada, N. en_US
contributor.author Fayek, M. K. en_US
date.accessioned 2009-12-23T10:51:26Z en_US
date.available 2009-12-23T10:51:26Z en_US
date.issued 1986-02 en_US
identifier.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
identifier.issn 0304-3843 (Print) en_US
identifier.issn 1572-9540 (Online) en_US
identifier.uri http://dx.doi.org/10.1007/BF02061526 en_US
identifier.uri http://hdl.handle.net/10576/10413 en_US
description.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.iso 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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