Characterization of piezoelectric single crystal y Ca4 O(B O3)3 for high temperature applications

Shujun Zhang, Yiting Fei, Bruce H.T. Chai, Eric Frantz, David W. Snyder, Xiaoning Jiang, Thomas R. Shrout

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Abstract

Operation at temperatures well above ambient is desired for applications such as smart structures integrated within aircraft and space vehicles. Piezoelectric yttrium calcium oxyborate single crystal Y Ca4 O(B O3)3 (YCOB) was found to exhibit no phase transition until its melting temperature around ∼1500 °C. The temperature characteristics of the resonance frequency, electromechanical coupling, and dielectric permittivity were studied in the temperature range of 30-950 °C for different orientations. The electrical resistivity at 800 °C was found to be greater than 2× 108 cm. Together with its temperature independent electromechanical coupling factor (∼12%) and engineered resonance frequency behavior, these make YCOB crystals excellent candidates for sensing applications at ultra high temperatures.

Original languageEnglish (US)
Article number202905
JournalApplied Physics Letters
Volume92
Issue number20
DOIs
Publication statusPublished - May 30 2008

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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