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An unusual pyroelectric response

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
67
Issue
12
Identifiers
DOI: 10.1016/0038-1098(88)91086-1

Abstract

Abstract The ferroelectric and pyroelectric properties of Li 0.03Na 0.97NbO 3 crystals have been studied in the temperature range from 300 to 20 K. A large jump in the spontaneous polarization has been observed which appears at about 180 K on cooling and at about 260 K on heating. In the temperature ranges in which the spontaneous polarization jumps, the pyroelectric time response changes its polarity following a temperature variation. This unusual pyroelectric behaviour is attributed to the coexistence of two phases in the process of phase transition.

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