Tunable BST:MgO dielectric composite by microwave sintering

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

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Abstract

Microwave sintering route was used for obtaining minimum chemical reactivity between the two phases (for sharp grain boundaries) and controlled microstructure in the composites of Ba1 - xSrxTiO3 (BST) and MgO. Composites of desirable compositions of ferroelectric BST and non-ferroelectric MgO were microwave sintered at a frequency of 2.45 GHz. Low dielectric constant, controlled microstructure, high relative density, and sharp grain boundary in BST:MgO composites were achieved. The depressed dielectric constant and tangent loss, high tunability and K-factor values are measured in the sintered composites. This paper describes the detailed studies on the microwave sintered BST:MgO composites and their tunable dielectric properties and microstructure development.

Original languageEnglish (US)
Pages (from-to)155-163
Number of pages9
JournalFerroelectrics
Volume306
DOIs
StatePublished - Jan 1 2004

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Agrawal, S., Guo, R., Agrawal, D. K., & Bhalla, A. S. (2004). Tunable BST:MgO dielectric composite by microwave sintering. Ferroelectrics, 306, 155-163. https://doi.org/10.1080/00150190490460803