High dielectric tunability of ferroelectric (Ba1-x,Srx)(Zr0.1,Ti0.9)O3ceramics

N. Y. Chan; S. H. Choy; D. Y. Wang; Y. Wang; Jiyan Dai; H. L.W. Chan

doi:10.1007/s10854-014-1915-1

High dielectric tunability of ferroelectric (Ba_1-x,Sr_x)(Zr_0.1,Ti_0.9)O₃ceramics

N. Y. Chan, S. H. Choy, D. Y. Wang, Y. Wang, Jiyan Dai, H. L.W. Chan

Research output: Journal article publication › Journal article › Academic research › peer-review

22 Citations (Scopus)

Abstract

(Ba1-x,Srx)(Zr0.1,Ti0.9)O3(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) TiO3ferroelectrics for developing high frequency tunable dielectric devices.

Original language	English
Pages (from-to)	2589-2594
Number of pages	6
Journal	Journal of Materials Science: Materials in Electronics
Volume	25
Issue number	6
DOIs	https://doi.org/10.1007/s10854-014-1915-1
Publication status	Published - 1 Jan 2014

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1007/s10854-014-1915-1

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abstract = "(Ba1-x,Srx)(Zr0.1,Ti0.9)O3(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) TiO3ferroelectrics for developing high frequency tunable dielectric devices.",

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T1 - High dielectric tunability of ferroelectric (Ba1-x,Srx)(Zr0.1,Ti0.9)O3ceramics

AU - Chan, N. Y.

AU - Choy, S. H.

AU - Wang, D. Y.

AU - Wang, Y.

AU - Dai, Jiyan

AU - Chan, H. L.W.

PY - 2014/1/1

Y1 - 2014/1/1

N2 - (Ba1-x,Srx)(Zr0.1,Ti0.9)O3(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) TiO3ferroelectrics for developing high frequency tunable dielectric devices.

AB - (Ba1-x,Srx)(Zr0.1,Ti0.9)O3(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) TiO3ferroelectrics for developing high frequency tunable dielectric devices.

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DO - 10.1007/s10854-014-1915-1

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SN - 0957-4522

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JO - Journal of Materials Science: Materials in Electronics

JF - Journal of Materials Science: Materials in Electronics

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ER -

High dielectric tunability of ferroelectric (Ba_1-x,Sr_x)(Zr_0.1,Ti_0.9)O₃ceramics

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