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Title: The determination of the magnetoelectric coupling coefficient in ferroelectric-ferromagnetic composite base on PZT-ferrite
Authors: Bartkowska, Joanna Agnieszka
Zachariasz, Radosław
Bochenek, Dariusz
Ilczuk, Jan
Keywords: electric permittivity
Issue Date: 2013
Publisher: Institute of Metallurgy and Materials Science, Polish Academy of Sciences
Citation: Archives of Metallurgy and Materials, Vol. 58, iss. 4 (2013), s. 1401-1403
Abstract: In the present work, the magnetoelectric coupling coefficient, from the temperature dependences of the dielectric permittivity for the multiferroic composite was determined. The research material was ferroelectric–ferromagnetic composite on the based PZT and ferrite. We investigated the temperature dependences of the dielectric permittivity (") for the different frequency of measurement’s field. From the dielectric measurements we determined the temperature of phase transition from ferroelectric to paraelectric phase. For the theoretical description of the temperature dependence of the dielectric constant, the Hamiltonian of Alcantara, Gehring and Janssen was used. To investigate the dielectric properties of the multiferroic composite this Hamiltonian was expressed under the mean–field approximation. Based on dielectric measurements and theoretical considerations, the values of the magnetoelectric coupling coefficient were specified.
DOI: 0.2478/amm-2013-0183
ISSN: 1733-3490
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