Bismuth titanate fabricated by spray-on deposition and microwave sintering for high-temperature ultrasonic transducers

Clifford T. Searfass, C. Pheil, K. Sinding, Bernhard R. Tittmann, A. Baba, Dinesh Kumar Agrawal

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Thick films of ferroelectric bismuth titanate (Bi4Ti3O12) have been fabricated by spray-on deposition in conjunction with microwave sintering for use as high-temperature ultrasonic transducers. The elastic modulus, density, permittivity, and conductivity of the films were characterized. Electro-mechanical properties of the films were estimated with a commercial d33 meter which gave 16 pC/N. This value is higher than typically reported for bulk bismuth titanate; however, these films withstand higher field strengths during poling which is correlated with higher d33 values. Films were capable of operating at 650 °C for roughly 5 min before depoling and can operate at 600 °C for at least 7 days.

Original languageEnglish (US)
Article number7330039
Pages (from-to)139-146
Number of pages8
JournalIEEE transactions on ultrasonics, ferroelectrics, and frequency control
Volume63
Issue number1
DOIs
StatePublished - Jan 1 2016

Fingerprint

Ultrasonic transducers
Bismuth
bismuth
sprayers
sintering
transducers
Sintering
ultrasonics
Microwaves
microwaves
Temperature
Thick films
Ferroelectric materials
thick films
field strength
modulus of elasticity
Permittivity
Elastic moduli
mechanical properties
permittivity

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering

Cite this

Searfass, Clifford T. ; Pheil, C. ; Sinding, K. ; Tittmann, Bernhard R. ; Baba, A. ; Agrawal, Dinesh Kumar. / Bismuth titanate fabricated by spray-on deposition and microwave sintering for high-temperature ultrasonic transducers. In: IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 2016 ; Vol. 63, No. 1. pp. 139-146.
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Bismuth titanate fabricated by spray-on deposition and microwave sintering for high-temperature ultrasonic transducers. / Searfass, Clifford T.; Pheil, C.; Sinding, K.; Tittmann, Bernhard R.; Baba, A.; Agrawal, Dinesh Kumar.

In: IEEE transactions on ultrasonics, ferroelectrics, and frequency control, Vol. 63, No. 1, 7330039, 01.01.2016, p. 139-146.

Research output: Contribution to journalArticle

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AU - Searfass, Clifford T.

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AU - Baba, A.

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