TGS和GTGS热释电晶体的热力学模型模拟曲线

功能材料, 2005, 36(11): 1786-1788.

TGS和GTGS热释电晶体的热力学模型模拟曲线

胡文成 ^1, , 杨传仁 ^2, , 张万里 ^3, , 廖希异 ^4,

1.电子科技大学,微电子与固体电子学院,四川,成都,610054

2.电子科技大学,微电子与固体电子学院,四川,成都,610054

3.电子科技大学,微电子与固体电子学院,四川,成都,610054

4.电子科技大学,微电子与固体电子学院,四川,成都,610054

基金项目: 科技部科研项目(51310Z04)

关键词：热释电晶体 , 极化方程 , 热力学模型 , 热释电方程

The simulation curves of TSG and GTGS pyroelectric crystals by thermodynamics model

Keywords： thermodynamics model , pyroelectric crystal , polarization equation , pyroelectric equation

通过热力学推导,建立了零电场下热释电晶体的极化与温度的方程.由热释电系数的定义,对热释电晶体的极化方程对温度求导,得出由热力学模型建立的热释电方程.并对热释电晶体硫酸三甘氨酸(TGS)和掺胍TGS(GLTGS)的实验曲线进行了模拟,该理论基本符合.

Based on the thermodynamics theory of Devonshire, the polarization equation of pyroelectric crystal with the temperature was established under zero electric field. The equation of the pyroelectric coefficient with the temperature was established by the definition of pyroelectric coefficient and the derivation of polarization equation. The trend lines of spontaneous polarization and pyroelectric coefficient with the temperature and other coefficient are described. The simulation shows that our model and expression formula for pyroelectric crystals are in accordance with the experiment results of triglycine sulphate (TGS) and glycocyamine doped TGS (GTGS) pyroelectric crystals.

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