The effect of Y2O3 and ZnO on the microstructure and dielectric properties of BaTiO3 materials was researched. XRD indicates the crystal structures of BaTiO3 transform from tetragonal to pseudocubic by Y2O3 and ZnO codoping. SEM shows Y2O3 behaves more effective grain-growth-inhibition than ZnO owing to the intergranular second-phase Y2Ti2O7. Sufficient Y2O3 and ZnO can help to form the core-shell structure and improve the dielectric-temperature characteristics markedly. The high performance nonreducible dielectrics satisfying X7R can be achieved in the BaTiO3-Y2O3-ZnO new system.
LI Bo
,
ZHANG Shu-Ren
,
ZHOU Xiao-Hua
,
YUAN Ying
. Effect of Y2O3 and ZnO Co-doping on the Microstructure and Dielectric Properties of BaTiO3 Materials[J]. Journal of Inorganic Materials, 2007
, 22(3)
: 451
-455
.
DOI: 10.3724/SP.J.1077.2007.00451
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