Peculiarities of the pyroelectric current generated using a LiNbO3 single crystal driven by low-frequency sinusoidal temperature variation

被引：4

作者：

Oleinik, A. ^{[1
]}

Gilts, M. ^{[1
]}

Karataev, P. ^{[2
]}

Klenin, A. ^{[1
]}

Kubankin, A. ^{[1
,3
]}

机构：

[1] Belgorod State Univ, Lab Radiat Phys, Belgorod 308015, Russia

[2] Univ London, John Adams Inst Royal Holloway, Egham TW20 0EX, England

[3] Lebedev Phys Inst, Moscow 119991, Russia

来源：

JOURNAL OF APPLIED PHYSICS | 2022年 / 132卷 / 20期

基金：

英国科学技术设施理事会;

关键词：

NONPYROELECTRIC CURRENTS; SPACE-CHARGE; WASTE HEAT; WAVES;

D O I：

10.1063/5.0124599

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Lithium niobate (LiNbO3) single crystal is one of the pyroelectric materials, which can be applicable in energy storage and conversion devices. A theoretical and experimental study of the sinusoidal temperature variation of a single crystal of LiNbO3 with ultra-low frequency of 1-80 mHz is presented here. The previously unreported phenomenon of the optimal frequency range with the maximum amplitude of pyroelectric current oscillations is shown. It is noted that the observed effect is very sensitive to the thermal properties of the material. The impact of thermal properties of the crystal on the optimal frequency range is discussed. The accurate calculations of the pyroelectric coefficient using sinusoidal temperature variation are introduced. The observed phenomenon can be applied in pyroelectric energy converters and storage devices having a cycle time of 10-1000 s. Published under an exclusive license by AIP Publishing.

引用

页数：7