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

Clifford T. Searfass; C. Pheil; K. Sinding; B. R. Tittmann; A. Baba; D. K. Agrawal

doi:10.1109/TUFFC.2015.2501241

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

Clifford T. Searfass, C. Pheil, K. Sinding, B. R. Tittmann, A. Baba, D. K. Agrawal

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

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 language	English (US)
Article number	7330039
Pages (from-to)	139-146
Number of pages	8
Journal	IEEE transactions on ultrasonics, ferroelectrics, and frequency control
Volume	63
Issue number	1
DOIs	https://doi.org/10.1109/TUFFC.2015.2501241
State	Published - Jan 2016

All Science Journal Classification (ASJC) codes

Instrumentation
Acoustics and Ultrasonics
Electrical and Electronic Engineering

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10.1109/TUFFC.2015.2501241

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

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.",

author = "Searfass, {Clifford T.} and C. Pheil and K. Sinding and Tittmann, {B. R.} and A. Baba and Agrawal, {D. K.}",

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AU - Searfass, Clifford T.

AU - Pheil, C.

AU - Sinding, K.

AU - Tittmann, B. R.

AU - Baba, A.

AU - Agrawal, D. K.

PY - 2016/1

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AB - 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.

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

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