Fe valence fluctuations and magnetoelastic coupling in Pb-based multiferroics perovskites
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
09/06/2014
09/06/2014
01/02/2013
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| Resumo |
Lead-based multiferroics perovskites with nominal compositions Pb(Fe1/2Nb1/2)O3 and Pb(Fe2/3W1/3)O3 were synthesized following a two-stage method. Magnetic proprieties were investigated and correlated to anelastic proprieties, measured by the conventional pulse-echo method. The discussions are focused in the region around 250 K, where magnetoelectroelastic instabilities have been observed. X-ray absorption nearedge structure (XANES) study further indicates that the edge position varies with temperature revealing a fluctuation on the valence of iron ions with the temperature, which can be related to a variation in anelastic and magnetic proprieties. FAPESP (08/04025-0, 10/11187-6) CNPq |
| Identificador |
Physica Status Solidi A, Weinheim : Wiley-VCH Verlag, v. 210, n. 2, p. 386-390, Feb. 2013 1862-6300 http://www.producao.usp.br/handle/BDPI/45331 10.1002/pssa.201228376 |
| Idioma(s) |
eng |
| Publicador |
Wiley-VCH Verlag Weinheim |
| Relação |
Physica Status Solidi A |
| Direitos |
restrictedAccess Copyright WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
| Palavras-Chave | #Anelastic #Multiferroics #PFN #PFW #XANES #MATERIAIS CERÂMICOS #PROPRIEDADES DOS MATERIAIS #FERROMAGNETISMO |
| Tipo |
article original article publishedVersion |
