Microwave dielectric properties of barium substituted screen printed CaBi2Nb2O9 ceramic thick films

Varsha D. Phadtare, Vinayak G. Parale, Gopal K. Kulkarni, Hyung Ho Park, Vijaya R. Puri

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In the present study, Aurivillius-structured Ba2+ substituted CaBi2Nb2O9 (CBNO) ceramic powder was synthesized by co-precipitation method. The CBNO thick films were delineated by screen printing method on alumina substrates using co-precipitated ceramic powder. The overlay method was adopted to measure the microwave dielectric properties of prepared thick films. Single phase layered perovskite structure of the prepared thick films was confirmed by X-ray Diffraction. The effects of Ba2+ substitution on the surface morphology, bonding, and microwave dielectric properties of thick films were systematically presented. The maximum value of microwave dielectric constant for the CBNO thick films at 11.8 GHz is 15.6 for Ba2+=0.8 substitution. The shift in the stretching vibration modes of the Nb-O bond of NbO6 octahedron in the Raman spectra with a substitution of Ba2+ in CBNO was observed. The substitution of Ba2+ on A-site of CBNO improves the microwave dielectric properties of prepared thick films. This work may provide a new approach to enhance the microwave dielectric performance of Aurivillius-structured ceramic thick films.

Original languageEnglish
Pages (from-to)7515-7523
Number of pages9
JournalCeramics International
Volume44
Issue number7
DOIs
Publication statusPublished - 2018 May

Fingerprint

Barium
Thick films
Dielectric properties
Microwaves
Substitution reactions
Powders
Screen printing
Aluminum Oxide
Coprecipitation
Perovskite
Stretching
Surface morphology
Raman scattering
Permittivity
Alumina
X ray diffraction
Substrates

All Science Journal Classification (ASJC) codes

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

Cite this

Phadtare, Varsha D. ; Parale, Vinayak G. ; Kulkarni, Gopal K. ; Park, Hyung Ho ; Puri, Vijaya R. / Microwave dielectric properties of barium substituted screen printed CaBi2Nb2O9 ceramic thick films. In: Ceramics International. 2018 ; Vol. 44, No. 7. pp. 7515-7523.
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Microwave dielectric properties of barium substituted screen printed CaBi2Nb2O9 ceramic thick films. / Phadtare, Varsha D.; Parale, Vinayak G.; Kulkarni, Gopal K.; Park, Hyung Ho; Puri, Vijaya R.

In: Ceramics International, Vol. 44, No. 7, 05.2018, p. 7515-7523.

Research output: Contribution to journalArticle

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