Conventional and Spark Plasma Sintered Ba0.8Pb0.2TiO3 Nano Ceramics: Structural, Dielectric, and Ferroelectric Properties

Venkata Ramana Mudinepalli, Feng Leng, Wen-Chin Lin, B. S. Murty

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Ba0.8Pb0.2TiO3 nanocrystalline ferroelectric ceramics were prepared by high-energy ball mill followed by spark plasma sintering and conventional sintering techniques. Sintering behavior, microstructure, dielectric properties, and ferroelectric properties were investigated by XRD, SEM, dielectric spectrometer, and ferroelectric P-E loop tracer. It was found that the densification process was greatly enhanced during SPS. The sintering temperature was 673 K (400 °C) lower and the microstructure was much finer than that of conventionally sintered ceramics, and dense compacts with a higher density of over 99 pct were obtained. The average grain size in the conventionally sintered samples is up to about 200 nm, while that in the spark plasma sintered prepared sample is only about 100 nm. The room temperature and transition temperature dielectric constant of spark plasma-sintered samples is higher than that of the conventionally sintered sample. There is a noticeable difference in processing time between conventional sintering and spark plasma sintering, and the latter offers potential advantage in time saving also.

Original languageEnglish
Pages (from-to)2579-2586
Number of pages8
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume47
Issue number6
DOIs
Publication statusPublished - 2016 Jun 1

Fingerprint

Structural ceramics
sparks
Electric sparks
Ferroelectric materials
dielectric properties
sintering
Sintering
ceramics
Plasmas
Spark plasma sintering
Ferroelectric ceramics
Microstructure
Ball mills
Densification
Dielectric properties
Superconducting transition temperature
Spectrometers
microstructure
Permittivity
densification

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Cite this

Conventional and Spark Plasma Sintered Ba0.8Pb0.2TiO3 Nano Ceramics : Structural, Dielectric, and Ferroelectric Properties. / Mudinepalli, Venkata Ramana; Leng, Feng; Lin, Wen-Chin; Murty, B. S.

In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 47, No. 6, 01.06.2016, p. 2579-2586.

Research output: Contribution to journalArticle

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