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Magnetic Properties of CoFe2O4–BaTiO3 Composites
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SYSNO ASEP 0387487 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Magnetic Properties of CoFe2O4–BaTiO3 Composites Author(s) Čuda, J. (CZ)
Mousa, I. (EG)
David, Bohumil (UFM-A) RID
Pizúrová, Naděžda (UFM-A) RID, ORCID
Tuček, J. (CZ)
Žák, Tomáš (UFM-A) RID
Mašláň, M. (CZ)
Schneeweiss, Oldřich (UFM-A) RID, ORCIDNumber of authors 8 Source Title Mossbauer Spectroscopy in Materials Science - 2012. - : American Institue of Physics Melville, NY, 2012 - ISSN 0094-243X - ISBN 978-0-7354-1101-2 Pages s. 123-132 Number of pages 10 s. Publication form Print - P Action Mossbauer Spectroscopy in Materials Science /10./ Event date 11.06.2012-15.06.2012 VEvent location Olomouc Country CZ - Czech Republic Event type WRD Language eng - English Country US - United States Keywords Barium titanate ; Cobalt ferrite ; Magnetic properties ; Mossbauer spectroscopy Subject RIV BM - Solid Matter Physics ; Magnetism Institutional support UFM-A - RVO:68081723 UT WOS 000311909900014 Annotation The aim of the present work is to study how the volume (lattice parameters) changes of barium titanate, induced by a phase transition, which occurs by temperature sweeps, influence magnetic behavior of cobalt ferrite in their composites via inverse magnetostrictive (Villari) effect. Structure, phase composition, and magnetic properties were investigated using X-ray diffraction, Mössbauer spectroscopy, and temperature dependence of magnetization. The tetragonal-to-orthorhombic phase transition in barium titanate occurring at ~280 K on cooling can be observed in the zero-field cooled magnetization curve. The other phase transitions, i.e., tetragonal-to-cubic transition at ~390 K and orthorhombic-to-rhombohedral transition at ~178 K, were detected neither by magnetic nor by Mössbauer measurements. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2013
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