Dielectric tunability of BST:MgO composites prepared by using nano particles

Shashnk Agrawal, R. Guo, D. K. Agrawal, A. S. Bhalla, R. R. Neurgaonkar, C. B. Murray

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The dielectric properties of ferroelectric Ba0.5Sr 0.5TiO3 and non-ferroelectric MgO composites synthesized by using nano particles are investigated for tunable microwave applications. Dielectric properties are studied in the temperature range of -250°C to 100°C, with and without an electrical field. The dielectric tunability is ∼50% for BST:MgO composites under the field of 80 KV/cm. at around the Curie peak. The use of nano particle sizes of materials considerably reduces dielectric losses and shows comparatively high K-factor values in the resulted composites. The ferroelectric phase is well connected and thus enhances the overall dielectric properties of the composites.

Original languageEnglish (US)
Pages (from-to)149-156
Number of pages8
JournalFerroelectrics, Letters Section
Volume31
Issue number5-6
DOIs
StatePublished - Dec 1 2004

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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