Electromechanical Properties of NaNO2 Single Crystals
- 1 February 1963
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 2 (2)
- https://doi.org/10.1143/jjap.2.83
Abstract
Resonance and antiresonance measurements have been made on NaNO2 single crystals. Temperature dependence of all piezoelectric constants and five elastic compliance coefficients has been investigated in the range from -50°C to 230°C. The piezoelectric constants d 21, d 22 and d 23 have values of the order 10-8 (cgs. esu.) at room temperature, and show pronounced peaks just below the Curie point. The constants d 34 and d 16 are of the order of, 10-8 (cgs. esu.), and are nearly independent of temperature. The remarkable fact is that d 22 and d 23 change their signs in passing 100°C. Elastic anomalies are observed near the Curie point. Some discussions are made in connection with the ferroelectric properties of NaNO2.Keywords
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