Abstract
The microwave ceramic Ba(Y,Sb)0.05Ti0.90O3, based upon random B-site dipole-like substitutions is structurally and electrically characterized over the temperature range −55°C to 120°C. X-ray diffraction information coupled together with scanning electron microscopy reveals that the material is single phase and has submicron grain sizes. Results show the tetragonal phase ranges from −30°C to 200°C, which is a broader temperature range than that of the parent material BaTiO3, 0°C to 120°C. The material Ba(Y,Sb)0.05Ti0.90O3 also has a diffuse relative high dielectric constant of about 10,000 that peaks at the orthorhombic-tetragonal structural phase transition around −30°C.
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