Products and microwave dielectric properties of ceramics with nominal composition (Ba0.9Ca0.1)(YxB′1/2)O(3x+4.5)/2 (B′=Nb5+, Ta5+)
作者： Hiroyuki Ikawa , Minoru Takemoto , Mizuho Katouno , Masashi Takamura
DOI: 10.1016/S0955-2219(03)00159-6
关键词: Microwave dielectric properties 、 Materials science 、 Ceramic 、 Analytical chemistry 、 Ion 、 Single phase 、 Inorganic chemistry
摘要: Abstract The products and microwave dielectric properties of ceramics with nominal composition (Ba 0.9 Ca 0.1 )(Y x B ′ 1/2 )O (3 +4.5)/2 ( ′=Nb 5+ , Ta ) are investigated. When =0.5, i.e. 3 B′ =Nb ), the product contains a considerable amount Y 2 O as well main perovskite phase. =0.3 is single phase, equivalent to Ba(Ca 1/9 3/9 Nb 5/9 or . lattice parameters these new compounds smaller than those Ba(Y relative permittivities e r larger ). increase in Nb-system about 4 times that Ta-system. Q f values present Ca-containing 1− )(Mg 1/3 2/3 system. sharp this study cannot be explained by 2+ rattling ion model at A -site, which applies case method explain discussed.
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