Semi-empirical estimation for enhancing negative thermal expansion in PbTiO_(3)-based perovskites

作     者：Tao Yang Longlong Fan Yilin Wang Kun Lin Jun Chen Xianran Xing Tao Yang;Longlong Fan;Yilin Wang;Kun Lin;Jun Chen;Xianran Xing

作者机构：Beijing Advanced Innovation Center for Materials Genome EngineeringInstitute of Solid State ChemistryDepartment of Physical ChemistryUniversity of Science and Technology BeijingBeijing 100083China College of Physics and Materials ScienceTianjin Normal UniversityTianjin 300387China Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech UniversityNanjing 211816China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2022年第29卷第4期

页      面：783-786页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Key R&D Program of China(No.2020YFA0406202) the National Natural Science Foundation of China(Nos.22090042 and 21731001) 

主　　题：enhanced negative thermal expansion crystal structure lead titanate spontaneous polarization 

摘      要：Generally,most materials expand when heated and contract when cooled,whereas negative thermal expansion(NTE)materials are very *** a typical NTE material,PbTiO_(3) and related compounds have drawn particular interest in recent *** discovery of an enhanced NTE system in PbTiO_(3) is beneficial to deepen our understanding of its mechanism and regulate its *** present,the method of discriminating an enhanced NTE material based on PbTiO_(3) is not ***,we propose a semi-empirical method through evaluating the average lattice distortion in related systems to estimate the relative coefficient of thermal expansion *** rationality of the method was verified by the analysis of the 0.6PbTiO_(3)-0.4Bi(Ga_(x)Fe_(1-x))O_(3) *** far,all PbTiO_(3)-based compounds with enhanced NTE conform well to this *** method provides the possibility to find more enhanced NTE PbTiO_(3)-based materials.