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Relaxor-like ferroelectric behaviour favoured by short-range B-site ordering in 10% Ba2+ substituted MgFe2O4
P. Chithra Lekha,
Published in Elsevier Ltd
2014
Volume: 53
   
Pages: 240 - 245
Abstract
Using the molten salt method, pristine and Ba2+ substituted MgFe2O4 are prepared. The relaxor-like behaviour observed in the dielectric dispersion indicates the existence of B-site short-range ordering with the local P4122/P4322 symmetry which is confirmed by the Raman spectroscopy. The paper further analyses the origin of polarization using Maxwell-Wagner fit and Nyquist plot. This work suggests a possible way to increase the relaxor-like ferroelectric ordering, larger span of relaxation temperature (ΔTm) and the effective masking of electronic contribution by the substitution of Ba2+ ion. © 2014 Elsevier Ltd.
About the journal
JournalData powered by TypesetMaterials Research Bulletin
PublisherData powered by TypesetElsevier Ltd
ISSN00255408
Open AccessNo
Concepts (10)
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    Magnetic materials
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    Raman spectroscopy
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    Electronic contributions
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    FERROELECTRIC ORDER
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    Impedance spectroscopy
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    MOLTEN SALT METHOD
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    Nyquist plots
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    RELAXATION TEMPERATURE
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    Short range ordering
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    Ferroelectricity