Low-temperature pyroelectricityстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Авторы:
Novik V.K. ,
Gavrilova N.D.
Журнал:
Physics of the Solid State
Том:
42
Номер:
6
Год издания:
2000
Издательство:
Pleiades Publishing, Ltd
Местоположение издательства:
Road Town, United Kingdom
Первая страница:
991
Последняя страница:
1008
Аннотация:
The current state of the set of problems associated with the study and application of the pyroelectric effect at low (Τ < 30 Κ) temperatures is outlined. The reasons for the qualitatively different temperature dependences of the total pyroelectric coefficient γσ(Τ) in linear pyroelectrics and ferroelectrics are discussed. An analysis is given of the reasons why the theoretical temperature dependences obtained for the primary pyroelectric coefficient γε(Τ) adequately describe the experimental γσ(Τ) dependences for all materials studied. In this connection, the correctness of determining the secondary pyroelectric coefficient γδ(Τ) from the macroscopically measured coefficients of thermal expansion is considered. The potential of thermodynamically nonequilibrium polar media and low-temperature pyroelectric materials is substantiated. The review consists of the following sections: (1) an introduction; (2) the theory of low-temperature pyroelectricity; (3) experimental procedures; (4) discussion of the experimental data: (A) perfect single crystals, (B) the problem of the secondary pyroelectric coefficient, (C) imperfect single crystals; (5) pyroelectric materials for low-temperature applications; and (6) a conclusion. © 2000 MAIK "Nauka/Interperiodica".
Добавил в систему:
Гаврилова Надежда Дмитриевна