典型文献
Semi-empirical estimation for enhancing negative thermal expansion in PbTiO3-based perovskites
文献摘要：
Generally, most materials expand when heated and contract when cooled, whereas negative thermal expansion (NTE) materials are very rare. As a typical NTE material, PbTiO3 and related compounds have drawn particular interest in recent years. The discovery of an en-hanced NTE system in PbTiO3 is beneficial to deepen our understanding of its mechanism and regulate its properties. At present, the method of discriminating an enhanced NTE material based on PbTiO3 is not universal. Here, we propose a semi-empirical method through evaluating the average lattice distortion in related systems to estimate the relative coefficient of thermal expansion conveniently. The rationality of the method was verified by the analysis of the 0.6PbTiO3–0.4Bi(Ga xFe1?x)O3 system. So far, all PbTiO3-based compounds with enhanced NTE conform well to this method. This method provides the possibility to find more enhanced NTE PbTiO3-based materials.
文献关键词：
中图分类号：
作者姓名：
Tao Yang;Longlong Fan;Yilin Wang;Kun Lin;Jun Chen;Xianran Xing
作者机构：
Beijing Advanced Innovation Center for Materials Genome Engineering,Institute of Solid State Chemistry,Department of Physical Chemistry,University of Sci-ence and Technology Beijing,Beijing 100083,China;College of Physics and Materials Science,Tianjin Normal University,Tianjin 300387,China;Institute of Advanced Materials,Jiangsu National Synergetic Innovation Center for Advanced Materials,Nanjing Tech University,Nanjing 211816,China
文献出处：
引用格式：
[1]Tao Yang;Longlong Fan;Yilin Wang;Kun Lin;Jun Chen;Xianran Xing-.Semi-empirical estimation for enhancing negative thermal expansion in PbTiO3-based perovskites)[J].矿物冶金与材料学报,2022(04):783-786
A类：
6PbTiO3,4Bi,xFe1
B类：
Semi,empirical,estimation,enhancing,negative,thermal,expansion,perovskites,Generally,most,materials,expand,when,heated,contract,cooled,whereas,NTE,rare,typical,related,compounds,have,drawn,particular,interest,recent,years,discovery,beneficial,deepen,our,understanding,its,mechanism,regulate,properties,At,present,method,discriminating,enhanced,not,universal,Here,propose,semi,through,evaluating,average,lattice,distortion,systems,estimate,relative,coefficient,conveniently,rationality,was,verified,by,analysis,Ga,So,far,conform,well,this,This,provides,possibility,find,more
AB值：
0.510758
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