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

Shashnk Agrawal, R. Guo, Dinesh Kumar Agrawal, A. S. Bhalla, R. R. Neurgaonkar, C. B. Murray

Research output: Contribution to journalArticle

11 Citations (Scopus)

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

Fingerprint

Dielectric properties
dielectric properties
composite materials
Composite materials
Ferroelectric materials
Dielectric losses
dielectric loss
Particle size
Microwaves
microwaves
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Agrawal, S., Guo, R., Agrawal, D. K., Bhalla, A. S., Neurgaonkar, R. R., & Murray, C. B. (2004). Dielectric tunability of BST:MgO composites prepared by using nano particles. Ferroelectrics, Letters Section, 31(5-6), 149-156. https://doi.org/10.1080/07315170490901472
Agrawal, Shashnk ; Guo, R. ; Agrawal, Dinesh Kumar ; Bhalla, A. S. ; Neurgaonkar, R. R. ; Murray, C. B. / Dielectric tunability of BST:MgO composites prepared by using nano particles. In: Ferroelectrics, Letters Section. 2004 ; Vol. 31, No. 5-6. pp. 149-156.
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Agrawal, S, Guo, R, Agrawal, DK, Bhalla, AS, Neurgaonkar, RR & Murray, CB 2004, 'Dielectric tunability of BST:MgO composites prepared by using nano particles', Ferroelectrics, Letters Section, vol. 31, no. 5-6, pp. 149-156. https://doi.org/10.1080/07315170490901472

Dielectric tunability of BST:MgO composites prepared by using nano particles. / Agrawal, Shashnk; Guo, R.; Agrawal, Dinesh Kumar; Bhalla, A. S.; Neurgaonkar, R. R.; Murray, C. B.

In: Ferroelectrics, Letters Section, Vol. 31, No. 5-6, 01.12.2004, p. 149-156.

Research output: Contribution to journalArticle

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AU - Agrawal, Shashnk

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AB - 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.

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Agrawal S, Guo R, Agrawal DK, Bhalla AS, Neurgaonkar RR, Murray CB. Dielectric tunability of BST:MgO composites prepared by using nano particles. Ferroelectrics, Letters Section. 2004 Dec 1;31(5-6):149-156. https://doi.org/10.1080/07315170490901472