Negative thermal expansion: Mechanisms and materials

作     者：Erjun Liang Qiang Sun Huanli Yuan Jiaqi Wang Gaojie Zeng Qilong Gao Erjun Liang;Qiang Sun;Huanli Yuan;Jiaqi Wang;Gaojie Zeng;Qilong Gao

作者机构：Key Laboratory of Materials Physics of Ministry of Education of Chinaand School of Physics&MicroelectronicsZhengzhou UniversityZhengzhou450001China 

出 版 物：《Frontiers of physics》 (物理学前沿（英文版）)

年 卷 期：2021年第16卷第5期

页      面：69-105页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.11874328,11774078,and 21905252) China Postdoctoral Science Foundation(No.2019M652558) 

主　　题：negative thermal expansion mechanisms of thermal contraction negative thermal expansion materials lattice thermal dynamics magnetovolume effect ferroelectrostriction charge transfer anisotropic elasticity 

摘      要：Negative thermal expansion(NTE)of materials is an intriguing phenomenon challenging the concept of traditional lattice dynamics and of importance for a variety of *** in this field develop markedly and update continuously our knowledge on the NTE behavior of *** this article,we review the most recent understandings on the underlying mechanisms(anharmonic phonon vibration,magnetovolume effect,ferroelectrorestriction and charge transfer)of thermal shrinkage and the development of NTE materials under each mechanism from both the theoretical and experimental *** the low frequency optical phonons which are usually accepted as the origins of NTE in framework structures,NTE driven by acoustic phonons and the interplay between anisotropic elasticity and phonons are *** on the data documented,some problems affecting applications of NTE materials are discussed and strategies for discovering and design novel framework structured NET materials are also presented.