Dielectric properties and tunability of (Ba 1-xSr x)TiO 3:MgO composites

Shashnk Agrawal; R. Guo; Dinesh Kumar Agrawal; A. S. Bhalla

Dielectric properties and tunability of (Ba _1-xSr _x)TiO ₃:MgO composites

Shashnk Agrawal, R. Guo, Dinesh Kumar Agrawal, A. S. Bhalla

Materials Research Institute (MRI)

Research output: Contribution to journal › Conference article › peer-review

Abstract

Composites of ferroelectric (Ba _1-xSr _x)TiO ₃ (BST) and non-ferroelectric MgO were prepared using nano particles to study the dielectric properties for microwave applications. By using precursor compounds of nano-sized particle, considerable reduction in dielectric losses was obtained, which enhances the figure of merit, K-factor, in the resulted composites. (Ba _1-xSr _x)TiO ₃:MgO composites with various volume ratios of the two components were sintered in a temperature range from 1400°C to 1600°C. Dielectric properties were studied in the temperature range of-250°C to 100°C, with and without bias electric fields. The low dielectric constants and tangent losses combined with high tunability and K-factor were achieved in the resulted composites. Tunable dielectric properties in relation to microstructure of BST:MgO composites are also discussed.

Original language	English (US)
Pages (from-to)	271-276
Number of pages	6
Journal	Ceramic Transactions
Volume	167
State	Published - Aug 22 2005
Event	106th Annual Meeting of the American Ceramic Society - Indianapolis, IN, United States Duration: Apr 18 2004 → Apr 21 2004

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

Cite this

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title = "Dielectric properties and tunability of (Ba 1-xSr x)TiO 3:MgO composites",

abstract = "Composites of ferroelectric (Ba 1-xSr x)TiO 3 (BST) and non-ferroelectric MgO were prepared using nano particles to study the dielectric properties for microwave applications. By using precursor compounds of nano-sized particle, considerable reduction in dielectric losses was obtained, which enhances the figure of merit, K-factor, in the resulted composites. (Ba 1-xSr x)TiO 3:MgO composites with various volume ratios of the two components were sintered in a temperature range from 1400°C to 1600°C. Dielectric properties were studied in the temperature range of-250°C to 100°C, with and without bias electric fields. The low dielectric constants and tangent losses combined with high tunability and K-factor were achieved in the resulted composites. Tunable dielectric properties in relation to microstructure of BST:MgO composites are also discussed.",

author = "Shashnk Agrawal and R. Guo and Agrawal, {Dinesh Kumar} and Bhalla, {A. S.}",

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volume = "167",

pages = "271--276",

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note = "106th Annual Meeting of the American Ceramic Society ; Conference date: 18-04-2004 Through 21-04-2004",

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TY - JOUR

T1 - Dielectric properties and tunability of (Ba 1-xSr x)TiO 3:MgO composites

AU - Agrawal, Shashnk

AU - Guo, R.

AU - Agrawal, Dinesh Kumar

AU - Bhalla, A. S.

PY - 2005/8/22

Y1 - 2005/8/22

N2 - Composites of ferroelectric (Ba 1-xSr x)TiO 3 (BST) and non-ferroelectric MgO were prepared using nano particles to study the dielectric properties for microwave applications. By using precursor compounds of nano-sized particle, considerable reduction in dielectric losses was obtained, which enhances the figure of merit, K-factor, in the resulted composites. (Ba 1-xSr x)TiO 3:MgO composites with various volume ratios of the two components were sintered in a temperature range from 1400°C to 1600°C. Dielectric properties were studied in the temperature range of-250°C to 100°C, with and without bias electric fields. The low dielectric constants and tangent losses combined with high tunability and K-factor were achieved in the resulted composites. Tunable dielectric properties in relation to microstructure of BST:MgO composites are also discussed.

AB - Composites of ferroelectric (Ba 1-xSr x)TiO 3 (BST) and non-ferroelectric MgO were prepared using nano particles to study the dielectric properties for microwave applications. By using precursor compounds of nano-sized particle, considerable reduction in dielectric losses was obtained, which enhances the figure of merit, K-factor, in the resulted composites. (Ba 1-xSr x)TiO 3:MgO composites with various volume ratios of the two components were sintered in a temperature range from 1400°C to 1600°C. Dielectric properties were studied in the temperature range of-250°C to 100°C, with and without bias electric fields. The low dielectric constants and tangent losses combined with high tunability and K-factor were achieved in the resulted composites. Tunable dielectric properties in relation to microstructure of BST:MgO composites are also discussed.

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M3 - Conference article

AN - SCOPUS:23744461814

SN - 1042-1122

VL - 167

SP - 271

EP - 276

JO - Ceramic Transactions

JF - Ceramic Transactions

T2 - 106th Annual Meeting of the American Ceramic Society

Y2 - 18 April 2004 through 21 April 2004

ER -

Dielectric properties and tunability of (Ba _1-xSr _x)TiO ₃:MgO composites

Abstract

All Science Journal Classification (ASJC) codes

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