Investigation of LiNbO3 and LiTaO3 single crystals for pyroelectric applications in the wide temperature range
Résumé
We present temperature dependences of pyroelectric response in LiNbO 3 and LiTaO 3 single crystals in operating condition as pyroelectric detectors and in the range 4,2–400 K. In the range 200–400 K, the pyroelectric response is nearly constant. At low-temperature (40–80 K) the pyroelectric response is shown to be the largest. In the range 4,5–12 K, the sign of the pyroelectric coefficient is found to change. This could be used for temperature stabilization devices.
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