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Dielectrical and Magnetic Properties of CoFe 2 O 4 –BaTiO 3 Composite Films Prepared by a Combined Method of Sol–Gel and Electrophoretic Deposition
Author(s) -
Zhang Ling,
Zhai Jiwei,
Mo Weifeng,
Yao Xi
Publication year - 2010
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.03823.x
Subject(s) - materials science , electrophoretic deposition , spinel , ferroelectricity , composite number , sol gel , microstructure , magnetization , dielectric , analytical chemistry (journal) , hysteresis , scanning electron microscope , electric field , ferromagnetism , perovskite (structure) , polarization (electrochemistry) , composite material , magnetic field , chemical engineering , condensed matter physics , nanotechnology , metallurgy , chemistry , chromatography , optoelectronics , physics , quantum mechanics , coating , engineering
CoFe 2 O 4 –BaTiO 3 composite thick films were prepared using a combined method of sol–gel and electrophoretic deposition. Phase compositions and microstructures of the films were examined using X‐ray diffraction (XRD) and scanning electron microscopic techniques, respectively. The XRD results indicated that the films consisted of both spinel CoFe 2 O 4 and BaTiO 3 perovskite phase. The leakage current density of the films is in the order of about 10 −8 A/cm 2 at zero electric field. Polarization– electric field ( P – E ) hysteresis loops and magnetization–magnetic field hysteresis loops of the thick films were investigated. At room temperature, the composite thick films show good ferroelectric and ferromagnetic properties.