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Characterization of Yttrium Iron Garnet/Barium Titanate Multiferroic Composites Prepared by Sol‐Gel and Coprecipitation Methods
Author(s) -
Schileo Giorgio,
Feteira Antonio,
Reaney Ian M.,
Postolache Petronel,
Mitoseriu Liliana,
Reichmann Klaus
Publication year - 2014
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12244
Subject(s) - coprecipitation , materials science , yttrium iron garnet , ferrimagnetism , barium titanate , dielectric , scanning electron microscope , composite material , raman spectroscopy , yttrium , sol gel , ceramic , chemical engineering , metallurgy , magnetization , nanotechnology , magnetic field , optics , oxide , physics , optoelectronics , quantum mechanics , engineering
Ceramic composites based on yttrium iron garnet ( YIG ) and barium titanate ( BT ) (30%wt YIG /70%wt BT ) were prepared by two sol‐gel methods and a coprecipitation route. The impact of processing routes on dielectric and magnetic properties was investigated. X‐ray diffraction ( XRD ) data combined with scanning electron microscopy ( SEM ) observations reveal the presence of both components and a good dispersion of YIG particles into the BT matrix. Ferrimagnetic behavior is observed in all composites, regardless of the preparation method. Ferroelectricity at room temperature was confirmed by Raman spectroscopy and dielectric measurements only in composites prepared by coprecipitation.