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Title: Technology and properties ferroelectromagnetics lead-free BFN-ferrite composites
Authors: Bochenek, Dariusz
Niemiec, Przemysław
Keywords: lead-free compounds; ferroelectromagnetic ceramic composites; multiferroics; smart materials
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. 1405-1409
Abstract: A lead free ceramic composite 0.9BaFe0:5Nb0:5O3-0.1Ni0:5Zn0:5Fe2O4 (BFN-NZF) with ferroelectromagnetic properties have been obtained in presented work. Ceramic composite powder obtained from the simple oxides Fe2O3, Nb2O5, ZnO, NiO and barium carbonate BaCO3. The composition of the composite was chosen so that the ratio of the BFN and NZF components was 90:10. The synthesis of components of BFN-NZF composite was performed using the calcination method. Final densification of synthesized powder has been done using free sintering. The XRD, the microstructure, EDS and dielectric investigations were performed. For comparison of the BFN ceramic and the BFN-NZF composites, temperature and frequency impedance research was conducted. Relaxation phenomena were observed at temperatures above 235 C in the BFN ceramic and above 150 C in the BFN-NZF composite. Obtained results show the coexistence of ferroelectric and magnetic properties. Such properties of obtained composites give the possibility to use them in magnetoelectric transducers.
DOI: 10.2478/amm-2013-0184
ISSN: 1733-3490
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