Design of polar boundaries enhancing negative electrocaloric performance by antiferroelectric phase-field simulations  

作　　者：Ke Xu Xiaoming Shi Cancan Shao Shouzhe Dong Houbing Huang 

机构地区：[1]School of Materials Science and Engineering,Beijing Institute of Technology,Beijing,100081,China [2]Advanced Research Institute of Multidisciplinary Science,Beijing Institute of Technology,Beijing,100081,China [3]School of Mathematics and Physics,University of Science and Technology Beijing,Beijing,100083,China

出　　处：《npj Computational Materials》2024年第1期1697-1704,共8页计算材料学(英文)

基　　金：supported financially by the National Natural Science Foundation of China(Grant No.52372100);the National Key Research and Development Program of China(Grant No.2019YFA0307900).

摘　　要：Electrocaloric refrigeration which is environmentally benign has attracted considerable attention.In distinction to ferroelectric materials,which exhibit an extremely high positive electrocaloric effect near the Curie temperature,antiferroelectric materials represented by PbZrO_(3) have a specific negative electrocaloric effect,i.e.,electric field decreases the temperature of the materials.However,the explanation of the microscopic mechanism of the negative electrocaloric effect is still unclear,and further research is still needed to provide a theoretical basis for the negative electrocaloric effect enhancement.

关 键 词：MATERIALS FERROELECTRIC effect 

分 类 号：TG1[金属学及工艺—金属学]