| Literature DB >> 26595915 |
Clifford T Searfass, C Pheil, K Sinding, B R Tittmann, A Baba, D K Agrawal.
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.Entities:
Year: 2015 PMID： 26595915 DOI： 10.1109/TUFFC.2015.2501241
Source DB: PubMed Journal: IEEE Trans Ultrason Ferroelectr Freq Control ISSN： 0885-3010 Impact factor: 2.725