Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/30145
Title: High dielectric tunability of ferroelectric (Ba1-x,Sr x)(Zr0.1,Ti0.9)O3 ceramics
Authors: Chan, NY
Choy, SH
Wang, DY
Wang, Y 
Dai, JY 
Chan, HLW 
Issue Date: 2014
Publisher: Springer
Source: Journal of materials science : materials in electronics, 2014, v. 25, no. 6, p. 2589-2594 How to cite?
Journal: Journal of materials science : materials in electronics 
Abstract: (Ba1-x,Srx)(Zr0.1,Ti0.9)O 3 (BSZT) ceramics with x = 0, 0.05, 0.15, 0.25, 0.35 and 0.45 were prepared by conventional solid state reaction method. The structural characterization with X-ray diffraction and scanning electron microscopy indicate a monotonical drop in lattice constants and grain size with the increase of Sr concentration. Consequently, the Curie temperature and remnant polarization of the ceramics exhibit a strong compositional dependence. A linear relationship between the Curie temperature and Sr concentration is revealed. At x = 0.45, the BSZT ceramics show substantially high tunability of over 55 % under 20 kV/cm dc electric field with very low dielectric loss value of 0.0025 at room temperature, suggesting the BSZT ceramics could be a promising alternative to traditional (Ba,Sr) TiO3 ferroelectrics for developing high frequency tunable dielectric devices.
URI: http://hdl.handle.net/10397/30145
ISSN: 0957-4522
EISSN: 1573-482X
DOI: 10.1007/s10854-014-1915-1
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