Dielectric properties of barium titanate ceramics doped by B2O3 vapor
2004; American Institute of Physics; Volume: 96; Issue: 11 Linguagem: Inglês
10.1063/1.1814167
ISSN1520-8850
AutoresJianquan Qi, Wan Ping Chen, Yu Wang, Helen Lai Wah Chan, Long Tu Li,
Tópico(s)Multiferroics and related materials
ResumoThe effects of B2O3 vapor doping on the dielectric properties of barium titanate ceramics were studied. After the doping, the Curie point of BaTiO3 ceramics was increased from 128 °C to 130 °C and the maximum dielectric constant was considerably increased. X-ray diffraction showed that both the grain lattice parameters and the tetragonality were increased by the boron oxide vapor doping. It was proposed that boron interstitial was introduced into the grain lattice of barium titanate ceramics by B2O3 vapor doping and the dielectric properties were thus obviously changed.
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