Mossbauer Investigations of the 0.5BaTiO sub(3)-0.5(Ni,Zn)Fe sub(2)O sub(4) Composites

A detailed Mossbauer study was performed in the ceramic composite 0.5BaTiO sub(3)- 0.5Ni sub(0.5)Zn sub(0.5)Fe sub(2)O sub(4) in order to detect an indirect magnetoelectric coupling via possible Mossbauer spectra anomalies around the barium titanate phase transitions. Dielectric spectra show the exi...

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Bibliographic Details
Published in:Ferroelectrics 2012-01, Vol.428 (1), p.101-108
Main Authors: Ramoska, T, Banys, J, Mitoseriu, L, Buscaglia, V, Mazeika, K, Baltrunas, D
Format: Article
Language:English
Subjects:
Barium titanates
Ceramics
Crystals
Grain boundaries
Mossbauer effect
Phase transformations
Spectra
Three phase
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Summary:A detailed Mossbauer study was performed in the ceramic composite 0.5BaTiO sub(3)- 0.5Ni sub(0.5)Zn sub(0.5)Fe sub(2)O sub(4) in order to detect an indirect magnetoelectric coupling via possible Mossbauer spectra anomalies around the barium titanate phase transitions. Dielectric spectra show the existence of three phase transitions in this composite near the crystal BaTiO sub(3) phase transitions temperatures. A few irregularities in the temperature dependence of the centre shift of Mossbauer spectra were observed near the phase transitions of BaTiO sub(3) which are explained mainly by the contribution of iron atoms incorporated into BaTiO sub(3) or located at the ceramic grain boundaries.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2012.675824