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arXiv 1502.02399cond-mat.mtrl-sci
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KH $_2$ PO $_4$族晶体的电热效应

Electrocaloric effect in KH$_2$PO$_4$ family crystals

A. S. Vdovych, A. P. Moina, R. R. Levitskii, I. R. Zachek

摘要:

考虑到质子有序参数对有效偶极矩的依赖性,对KH $_{2}$ PO $_{4}$型铁电体的质子有序模型进行了修正.在四粒子集团近似下,我们计算了晶体的极化,并探讨了电热效应。描述了纵向电场对铁电体相变的影响。与实验结果吻合较好。

英文摘要:

The proton ordering model for the KH$_{2}$PO$_{4}$ type ferroelectrics is modified by taking into account the dependence of the effective dipole moments on the proton ordering parameter. Within the four-particle cluster approximation we calculate the crystal polarization and explore the electrocaloric effect. Smearing of the ferroelectric phase transition by a longitudinal electric field is described. A good agreement with experiment is obtained.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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