Determination of the magnetoelectric coupling coefficient from temperature dependences of the dielectric permittivity for multiferroic ceramics Bi5Ti3FeO15

In the multiferroic materials, the dielectric and magnetic properties are closely correlated through the coupling interaction between the ferroelectric and magnetic order. We attempted to determine the magnetoelectric coupling coefficient from the temperature dependences of the dielectric permittivi...

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Bibliographic Details
Published in:Journal of experimental and theoretical physics 2013-11, Vol.117 (5), p.875-878
Main Authors: Bartkowska, J. A., Dercz, J.
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Disorder
Elementary Particles
Order
Particle and Nuclear Physics
Phase Transition in Condensed System
Physics
Physics and Astronomy
Quantum Field Theory
Relativity Theory
Solid State Physics
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Summary:In the multiferroic materials, the dielectric and magnetic properties are closely correlated through the coupling interaction between the ferroelectric and magnetic order. We attempted to determine the magnetoelectric coupling coefficient from the temperature dependences of the dielectric permittivity for multiferroic Bi 5 Ti 3 FeO 15 . Multiferroic ceramics Bi 5 Ti 3 FeO 15 belong to materials of the Aurivillius-type structure. Multiferroic ceramics Bi 5 Ti 3 FeO 15 was synthesized via sintering the Bi 2 O 3 and Fe 2 O 3 mixture and TiO 2 oxides. The precursor material was ground in a high-energy attritorial mill for 5 hours. This material was obtained by a solid-state reaction process at T = 1313 K. We investigated the temperature dependences of the dielectric permittivity for the different frequencies. From the dielectric measurements, we determined the temperature of phase transition of the ferroelectric-to-paraelectric type at about 1013 K. Based on dielectric measurements and theoretical considerations, the values of the magnetoelectric coupling coefficient were specified.
ISSN:1063-7761
1090-6509
DOI:10.1134/S1063776113120017