Dielectric properties of Ba0.5Sr0.5TiO3–MgO composites synthesized by a citrate gel in situ process

Ba0.5Sr0.5TiO3–MgO (BST–MgO) composite has been prepared in situ by a citrate gel process, which is characterized by differential thermal analysis, X-ray diffraction, scanning electron microscopy, infrared and dielectric spectroscopy. Results show that BST–MgO composite powders can be derived by pH=...

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Bibliographic Details
Published in:Ceramics international 2014-08, Vol.40 (7), p.11419-11422
Main Authors: Ji, Ludong, Zhang, Jingji, Gao, Yuee, Li, Yanli, Wang, Jiangying
Format: Article
Language:English
Subjects:
B. Composites
C. Dielectric properties
In situ synthesis
Sol–gel process
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Summary:Ba0.5Sr0.5TiO3–MgO (BST–MgO) composite has been prepared in situ by a citrate gel process, which is characterized by differential thermal analysis, X-ray diffraction, scanning electron microscopy, infrared and dielectric spectroscopy. Results show that BST–MgO composite powders can be derived by pH=7 precursor calcined at 700°C. The BST–MgO composite sintered at 1300°C exhibits good dielectric properties, with permittivity of 730, loss tangent of 0.002 and tunability of 20.8%.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2014.03.084