Dielectric and ultrasonic measurements in CsH2AsO4

Richard J. Pollina and Carl W. Garland
Phys. Rev. B 12, 362 – Published 1 July 1975
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Abstract

The shear elastic constants c44E and c66E and both the free and clamped c-axis dielectric constant have been measured in the paraelectric phase of single-crystal cesium dihydrogen arsenate. The temperature variation of c66E is well described by an elastic Curie expression arising from linear piezoelectric coupling. A 20-K difference between the free and clamped Curie temperatures is obtained from an analysis of the elastic measurements and directly from the c-axis dielectric measurements. The a-axis dielectric constant, which has been measured between 90 and 300 K, shows antiferroelectric characteristics and exhibits a well-defined first-order discontinuity.

  • Received 13 January 1975

DOI:https://doi.org/10.1103/PhysRevB.12.362

©1975 American Physical Society

Authors & Affiliations

Richard J. Pollina and Carl W. Garland

  • Department of Chemistry and Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

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Vol. 12, Iss. 1 — 1 July 1975

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