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- W4243005762 abstract "Piezoelectric films of 100% (002) oriented AIN were deposited on platinum-coated quartz, sapphire and LMN ceramics via a CVD process. The growth rate achieved was > 20 nm s −1 at 1020–1040 K. These films had the highest figure of merit (125) and dielectric strength ( > 2 × 10 7 V cm −1 ) of any known piezoelectric material. The relative dielectric constant is ∼8.6 and the thickness coupling coefficient, K t , 20%. The films exhibit ultrasonic response for temperatures ⩽1430 K. 30 MHz compressional-wave transducers were developed on quartz delay-rods with signal strength comparable to ZnO devices. Non-cooled, high temperature ultrasonic devices were developed using the oriented AIN films." @default.
- W4243005762 created "2022-05-12" @default.
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- W4243005762 date "1990-10-01" @default.
- W4243005762 modified "2023-09-30" @default.
- W4243005762 title "High frequency, high temperature ultrasonic transducers" @default.
- W4243005762 doi "https://doi.org/10.1016/0963-8695(90)90002-z" @default.
- W4243005762 hasPublicationYear "1990" @default.
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