Paraelectric, piezoelectric and pyroelectric crystals: I. Dielectric properties
Paraelectric, piezoelectric and pyroelectric crystals: I. Dielectric properties
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顺电晶体、压电晶体和热释电晶体：一、介电性能
DOI：
10.1088/0022-3719/6/1/024
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发表时间：
1973
期刊：
影响因子：
--
通讯作者：
R. Cowley
中科院分区：
文献类型：
--
作者：
G. Coombs;R. Cowley
在弱非简谐晶体模型的基础上研究了晶体的介电性质。特别强调了介电磁化率的低频行为，以及介电特性和声子密度分布波动之间耦合的可能性。这些涨落不能用低阶微扰理论来处理，但可以通过求解适当的输运方程来讨论。该方程的近似解是根据发展的超声波衰减技术得到的。
The dielectric properties of crystals are studied on the basis of the weakly anharmonic crystal model. Particular emphasis is placed on the low frequency behaviour of the dielectric susceptibility and on the possibility of a coupling between the dielectric properties and the fluctuations in the phonon density distribution. These fluctuations cannot be treated by low-order perturbation theory but can be discussed by solving the appropriate transport equation. The approximate solution to this equation is obtained following the techniques developed for ultrasonic attenuation.