Characterization of electrocaloric properties by indirect estimation and direct measurement of temperature–electric field hysteresis loops
Characterization of electrocaloric properties by indirect estimation and direct measurement of temperature–electric field hysteresis loops
复制标题
通过温度-电场磁滞回线的间接估计和直接测量来表征电热特性
DOI：
10.7567/jjap.54.10nb08
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发表时间：
2015
影响因子：
1.5
通讯作者：
H. Maiwa
中科院分区：
文献类型：
--
作者：
H. Maiwa
通过温度-电场（T-E）磁滞回线的间接估计和直接测量，研究了 Pb(Zr,Ti)O3(PZT) 基陶瓷和 Ba(Zr,Ti)O3 陶瓷以及 Pb(Mg,Nb)O3-PbTiO3 (PMN-PT) 晶体的电热特性。测量的 T-E 环显示出与应变电场 (s-E) 环类似的形状。由电热效应引起的绝热温度变化ΔT是根据这些样品的极化变化来估计的。在 30 kV/cm 的电场下，(Pb,La)(Zr,Ti)O3 (PLZT)(9.1/65/35) 陶瓷和 PMN-PT 晶体的 ΔT 分别估计为 0.48 和 0.66 K。当电场从 30 kV/cm 释放到零时，这些样品中测得的温度变化 ΔTs 分别为 0.39 和 0.36 K。
The electrocaloric properties of Pb(Zr,Ti)O3(PZT)-based and Ba(Zr,Ti)O3 ceramics and Pb(Mg,Nb)O3–PbTiO3 (PMN–PT) crystals were investigated by the indirect estimation and direct measurement of temperature–electric field (T–E) hysteresis loops. The measured T–E loops showed a similar shape to strain–electric field (s–E) loops. The adiabatic temperature change ΔT due to electrocaloric effects was estimated from the polarization change of these samples. ΔTs of 0.48 and 0.66 K were estimated for the (Pb,La)(Zr,Ti)O3 (PLZT)(9.1/65/35) ceramics and PMN–PT crystals under a field of 30 kV/cm, respectively. The measured temperature changes ΔTs in these samples upon the release of the electric field from 30 kV/cm to zero were 0.39 and 0.36 K, respectively.