论文标题
通过比较绝热和等温偏振数据，PBSC0.5TA0.5O3中电气温度变化的准平台测量
Quasi-indirect measurement of electrocaloric temperature change in PbSc0.5Ta0.5O3 via comparison of adiabatic and isothermal electrical polarization data
论文作者
论文摘要
通过比较电场缓慢变化而导致电气极化的等温变化，以及由于电场快速变化而导致的电偏振的绝热变化，通过比较电气极化的等温变化，在原型电气材料PBSC0.5TA0.5O3中鉴定了电动驱动的绝热变化。 By obtaining isothermal (adiabatic) electrical polarization data at measurement (starting) temperatures separated by <0.4 K, we identify a maximum temperature change of ~2 K due to a maximum field change of 26 kV cm-1, for starting temperatures in the range 300 - 315 K. These quasi indirect measurements combine with their direct, indirect and quasi-direct counterparts to complete the set, and could find routine use in future.
Electrically driven adiabatic changes of temperature are identified in the archetypal electrocaloric material PbSc0.5Ta0.5O3 by comparing isothermal changes of electrical polarization due to slow variation of electric field, and adiabatic changes of electrical polarization due to fast variation of electric field. By obtaining isothermal (adiabatic) electrical polarization data at measurement (starting) temperatures separated by <0.4 K, we identify a maximum temperature change of ~2 K due to a maximum field change of 26 kV cm-1, for starting temperatures in the range 300 - 315 K. These quasi indirect measurements combine with their direct, indirect and quasi-direct counterparts to complete the set, and could find routine use in future.
