The pyroelectric effect has been known for many years. However it is only in the last few years that a lot of applications have been found. These occur both in technology (i.e. infrared detection, imaging, thermometry, refrigeration, power conversion, memories, biology, geology, etc....) and science (atomic structure of crystals, anharmonicity of lattice vibrations etc....).
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A. Hadni (1981) studied this question.
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