Structural, dielectric and ferroelectric properties of SBN ceramics synthesized by microwave reactive sintering technique

S. N. Kumar; P. Kumar; D. K. Agrawal

doi:10.1016/j.ceramint.2012.03.034

Structural, dielectric and ferroelectric properties of SBN ceramics synthesized by microwave reactive sintering technique

S. N. Kumar, P. Kumar, D. K. Agrawal

Materials Research Institute (MRI)

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Strontium barium niobate (Sr _xBa _1-xNb ₂O ₆ with x = 0.53/SBN53) ceramics have been synthesized by microwave reactive sintering technique. Powders corresponding to SBN53 stoichiometric composition were calcined at 1200°C for 20, 30 and 45 min; and the green pellets made of calcined powders were sintered at 1300°C for 20, 30 and 40 min in a microwave furnace. Ceramics with tungsten bronze type crystal structure were obtained in relatively much less processing time as compared to conventional processing. The reaction between strontium niobate (SN) and barium niobate (BN) phases present in the calcined powders enhances the densification process of the ceramics during sintering. A relative density ∼98.3% was obtained in SBN53 ceramics sintered for 40 min. Curie transition temperature (T _c) and dielectric constant (ε _r) were found to vary from 113 to 135°C and from 1350 to 2500, respectively, depending on the processing conditions.

Original language	English (US)
Pages (from-to)	5243-5250
Number of pages	8
Journal	Ceramics International
Volume	38
Issue number	6
DOIs	https://doi.org/10.1016/j.ceramint.2012.03.034
State	Published - Aug 2012

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2012.03.034

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title = "Structural, dielectric and ferroelectric properties of SBN ceramics synthesized by microwave reactive sintering technique",

abstract = "Strontium barium niobate (Sr xBa 1-xNb 2O 6 with x = 0.53/SBN53) ceramics have been synthesized by microwave reactive sintering technique. Powders corresponding to SBN53 stoichiometric composition were calcined at 1200°C for 20, 30 and 45 min; and the green pellets made of calcined powders were sintered at 1300°C for 20, 30 and 40 min in a microwave furnace. Ceramics with tungsten bronze type crystal structure were obtained in relatively much less processing time as compared to conventional processing. The reaction between strontium niobate (SN) and barium niobate (BN) phases present in the calcined powders enhances the densification process of the ceramics during sintering. A relative density ∼98.3% was obtained in SBN53 ceramics sintered for 40 min. Curie transition temperature (T c) and dielectric constant (ε r) were found to vary from 113 to 135°C and from 1350 to 2500, respectively, depending on the processing conditions.",

author = "Kumar, {S. N.} and P. Kumar and Agrawal, {D. K.}",

year = "2012",

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doi = "10.1016/j.ceramint.2012.03.034",

language = "English (US)",

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pages = "5243--5250",

journal = "Ceramics International",

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T1 - Structural, dielectric and ferroelectric properties of SBN ceramics synthesized by microwave reactive sintering technique

AU - Kumar, S. N.

AU - Kumar, P.

AU - Agrawal, D. K.

PY - 2012/8

Y1 - 2012/8

N2 - Strontium barium niobate (Sr xBa 1-xNb 2O 6 with x = 0.53/SBN53) ceramics have been synthesized by microwave reactive sintering technique. Powders corresponding to SBN53 stoichiometric composition were calcined at 1200°C for 20, 30 and 45 min; and the green pellets made of calcined powders were sintered at 1300°C for 20, 30 and 40 min in a microwave furnace. Ceramics with tungsten bronze type crystal structure were obtained in relatively much less processing time as compared to conventional processing. The reaction between strontium niobate (SN) and barium niobate (BN) phases present in the calcined powders enhances the densification process of the ceramics during sintering. A relative density ∼98.3% was obtained in SBN53 ceramics sintered for 40 min. Curie transition temperature (T c) and dielectric constant (ε r) were found to vary from 113 to 135°C and from 1350 to 2500, respectively, depending on the processing conditions.

AB - Strontium barium niobate (Sr xBa 1-xNb 2O 6 with x = 0.53/SBN53) ceramics have been synthesized by microwave reactive sintering technique. Powders corresponding to SBN53 stoichiometric composition were calcined at 1200°C for 20, 30 and 45 min; and the green pellets made of calcined powders were sintered at 1300°C for 20, 30 and 40 min in a microwave furnace. Ceramics with tungsten bronze type crystal structure were obtained in relatively much less processing time as compared to conventional processing. The reaction between strontium niobate (SN) and barium niobate (BN) phases present in the calcined powders enhances the densification process of the ceramics during sintering. A relative density ∼98.3% was obtained in SBN53 ceramics sintered for 40 min. Curie transition temperature (T c) and dielectric constant (ε r) were found to vary from 113 to 135°C and from 1350 to 2500, respectively, depending on the processing conditions.

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DO - 10.1016/j.ceramint.2012.03.034

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JO - Ceramics International

JF - Ceramics International

IS - 6

ER -

Structural, dielectric and ferroelectric properties of SBN ceramics synthesized by microwave reactive sintering technique

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