论文标题
大型抗抗抗毒素PBZRO3的大负电脑效应的起源
Origin of the Large Negative Electrocaloric Effect in Antiferroelectric PbZrO3
论文作者
论文摘要
我们已经研究了原型抗抗fiferroelectric PBZRO3的电源响应，这是其抗抗弗罗伊自由 - 透明相变附近的电压和温度的函数。相反符号的大电位效应范围从-3.5 k的电冷却到+5.5 k的电热，直接用红外摄像头测量。我们通过量热和机电测量表明，大型负电局效应来自吸热的抗抗纤维自由 - 专制自用切换，与反平行晶格的偶极稳定相比，先前建议的是抗抗抗抗抗逆抗抗原电效应的抗爆发的抗晶格。
We have studied the electrocaloric response of the archetypal antiferroelectric PbZrO3 as a function of voltage and temperature in the vicinity of its antiferroelectric-paraelectric phase transition. Large electrocaloric effects of opposite signs, ranging from an electro-cooling of -3.5 K to an electro-heating of +5.5 K, were directly measured with an infrared camera. We show by calorimetric and electromechanical measurements that the large negative electrocaloric effect comes from an endothermic antiferroelectric-ferroelectric switching, in contrast to dipole destabilization of the antiparallel lattice, previously proposed as an explanation for the negative electrocaloric effect of antiferroelectrics.
