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Dielectric Properties of Ba0.5Sr0.5TiO3-P(VDF-CTFE) Nanocomposites

Published online by Cambridge University Press:  01 February 2011

Peixuan Wu ,
Xiaobing Shan  and
Zhong-yang Cheng
Peixuan Wu
Affiliation:
[email protected], Auburn University, Materials Research and Education Center,, Materials Research and Education Center, Auburn University, Auburn, Alabama, Auburn, AL, 36849, United States, 334-844-3353
Xiaobing Shan
Affiliation:
[email protected], Auburn University, Materials Research and Education Center, Auburn, AL, 36849, United States
Zhong-yang Cheng
Affiliation:
[email protected], Auburn University, Materials Research and Education Center, Auburn, AL, 36849, United States
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Abstract

Ceramic/polymer composite made of nanosize Ba0.5Sr0.5TiO3 (BST) powders and P(VDF-CTFE) copolymers as matrix. The concentration of the composites with BST from 0% to 50% in volume was investigated. The dielectric properties and structure as well as the morphology of the composites were characterized over a broad temperature range. It is found that the wetability between the polymer and ceramic powder is not good. The approach to improve the uniformity of composites was investigated. Due to the dielectric-constant-maximum temperature of the BST is different from that of copolymer, a weak dependence of the dielectric constant on temperature was observed over temperature from 10 °C to 100 °C.

Keywords

ferroelectricpolymerpowder
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1034 , 2007 , 1034-K10-14
Copyright
Copyright © Materials Research Society 2008

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References

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