首页|Dielectric Properties of BiFeO_3 Ceramics with Equal and Unequal Substitutions of Ti for Fe
Dielectric Properties of BiFeO_3 Ceramics with Equal and Unequal Substitutions of Ti for Fe
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BiFeO_3, BiFe_(0.9)Ti_(0.1)O_3 and BiFe_(0.9)Ti_(0.05)O_3 ceramics were prepared by solid state reactions and were compared in electrical and dielectric properties. The resistivity of BiFe_(0.9)Ti_(0.1)O_3 was 1.3×10~(12) Ω cm, which was about two and a half orders of magnitude higher than that of BiFeO_3. and three times higher than that of BiFe_(0.9)Ti_(0.1)O_3. The dielectric loss of BiFe_(0.9)Ti_(0.05)O_3 was 0.1 and 0.02 at 100Hz and 1MHz, respectively. These phenomena can be explained base on the decrease of oxygen vacancies V_O~(**) and defect complexes between the ferrum vacancies V_(fe)" and oxygen vacancies V_O~(**) in the ceramics.
BiFeO_3substitutionelectrical properties
Yan Hong Gu、Wan Ping Chen、Ming Jian Ding、Jian Quan Qi
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Department of Physics, Wuhan University, Wuhan, Hubei 430072, China
Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
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NSTL
Trans Tech Publications Ltd
