Thermodynamic and dynamic dielectric properties of one-dimensional hydrogen bonded ferroelectric of PbHPO4-type

Condensed Matter Physics

关键词: ferroelectric;    dielectric permittivity;    piezoelectric coefficient;    PbHPO4;    PbHPO₄;   

DOI  :  10.5488/CMP.17.43702

来源: DOAJ

【 摘 要 】

Within the modified model of proton ordering of one-dimensional ferroelectric having hydrogen bonds of PbHPO₄-type, their thermodynamic and dynamic characteristics are studied and calculated taking into account the linear (by crystal deformations ϵ_i (i=1,3) and ϵ₄) contributions into the energy of a proton system but without taking into account the tunneling in the two-particle cluster approximation. There has been obtained a good quantitative description of the temperature dependence of polarization, static dielectric permittivity, heat capacity and frequency dependence of dynamic dielectric permittivity at different temperatures for PbHPO₄ and PbHDO₄ crystals.

【 授权许可】

Unknown