Temperature-dependent energy storage characterization of Pb-free relaxor ferroelectrics  

作　　者：Sarir Uddin Guang-Ping Zheng Asif Khan Muhammad Riaz Khan Banaras Khan 

机构地区：[1]Department of Physics,Government College Hayatabad Peshawar 25124,Khyber Pakhtunkhwa,Pakistan [2]Department of Mechanical Engineering The Hong Kong Polytechnic University Hung Hom,Kowloon,Hong Kong [3]Department of Physical and Numerical Sciences Qurtuba University of Science&Information Technology Peshawar 25000,Khyber Pakhtunkhwa,Pakistan

出　　处：《Journal of Advanced Dielectrics》2020年第3期84-90,共7页先进电介质学报（英文）

基　　金：This work was supported by the Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory,China.

摘　　要：The energy storage properties of (1-x)Bi_(0.5)Na_(0.5)TiO_(3-x)BaTiO_(3)(0≤x≤0.08)(BNT-BT)ceramics obtained via sol-gel method are determined from the polarization versus electric field(P-E)loops at various temperatures.The energy storage densities are observed to increase with increase in temperature and this may be attributed to the presence of antiferroelectric(AFE)phase at higher temperature(≥120℃).Obvious changes are observed in the saturation polarization(P_(s)) and remnant polarization(P_(r)) with increasing temperature.The maximum energy storage density of 0.6 J/cm^(3)is observed for x=0:06 in the AFE phase at 150℃for 90 kV/cm of applied electric field.BNT-BT can be a promising candidate for energy storage devices to be used in above-roomtemperature environment.

关 键 词：LEAD-FREE perovskites relaxor ANTIFERROELECTRICS energy storage 

分 类 号：TQ1[化学工程]