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Investigation on CuCa 3 Ti 4 O 12 Modified BiFeO 3 ‐Based Perovskite Ceramics
Author(s) -
Wang Ben,
Gong Lixiu,
Wang Shumei,
Zhou Zhufa,
Ma Guilin
Publication year - 2013
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.12138
Subject(s) - materials science , dissipation factor , ceramic , grain boundary , crystal structure , phase boundary , dielectric , condensed matter physics , perovskite (structure) , phase (matter) , microstructure , composite material , crystallography , optoelectronics , organic chemistry , chemistry , physics
(BiFeO 3 ) 1− x –(CuCa 3 Ti 4 O 12 ) x ( x = 0.00, 0.10 and 0.20) ceramics had been prepared via the mixed route. The crystal structure transformation of BiFeO 3 ( BFO ) from rhombohedral to pseudotetragonal phase was induced by 20 mol% CuCa 3 Ti 4 O 12 ( CCTO ). Impedance measurements suggested the increase in grain boundary resistance, and CCTO addition could block the conduction path and stabilize the motion of defects. The dielectric constant and the loss tangent of BFO as a function of frequency were found to be incremental on increasing CCTO contents. The enhancement of magnetization would be attributed to the effective suppression of the spiral spin structure and the structure transformation.