【摘 要】
：
BaxSrl-xTiO3 [(BST), 0≤x≤1] is a solid solution ferroelectric material exhibiting a large dielectric constant non-linear change with an applied DC electric field.And Ba(SnxTi1-x)O3 solid solution also
【出 处】
：
2012 Postdoctoral Symposium of China on Materials Science &
论文部分内容阅读
BaxSrl-xTiO3 [(BST), 0≤x≤1] is a solid solution ferroelectric material exhibiting a large dielectric constant non-linear change with an applied DC electric field.And Ba(SnxTi1-x)O3 solid solution also has received much attention because of its good tunablity.In this paper, Ba0.6Sr0.4(SnxTil-x)O3 ceramics were obtained by traditional ceramic processing.The structural, surface morphological, dielectric properties, tunable properties of this material as well as the mechanism of their nonlinear dielectric constant under DC electric field were systematically examined.The Sn ions substitution of Ti ions has a strong effect on the grain sizes and the dielectric property.The results show that Ba0.6Sr0.4(SnxTil-x)O3 ceramic is a promising candidate for the DC electric field tunable materials for microwave electronics application, because they exhibit high relative tunability 34% as the strength of electric field is up to 1.5 kV/mm, and low dielectric loss 0.00045 at 100 kHz at room temperature.
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