Ferroic glasses  

作　　者：Yuanchao Ji Dong Wang Yu Wang Yumei Zhou Dezhen Xue Kazuhiro Otsuka Yunzhi Wang Xiaobing Ren 

机构地区：[1]Multi-disciplinary Materials Research Center and Center for Microstructure Science,Frontier Institute of Science and Technology,and State Key Laboratory for Mechanical Behaviour of Materials,Xi’an Jiaotong University,Xi’an 710049,China [2]Ferroic Physics Group,National Institute for Materials Science,Tsukuba 305-0047 Ibaraki,Japan [3]Department of Materials Science and Engineering,The Ohio State University,2041 College Road,Columus,OH 43210,USA

出　　处：《npj Computational Materials》2017年第1期97-105,共9页计算材料学（英文）

基　　金：supported by the National Basic Research Program of China(2014CB644003);National Natural Science Foundation of China(51320105014,51621063,51431007,51701150);Program for Changjiang Scholars and Innovative Research Team in University(IRT_17R85);the Fundamental Research Funds for the Central Universitie;the financial support of NSF under Grant DMR-1410322.

摘　　要：Ferroic glasses(strain glass,relaxor and cluster spin glass)refer to frozen disordered states in ferroic systems;they are conjugate states to the long-range ordered ferroic states—the ferroic crystals.Ferroic glasses exhibit unusual properties that are absent in ferroic crystals,such as slim hysteresis and gradual property changes over a wide temperature range.In addition to ferroic glasses and ferroic crystals,a third ferroic state,a glass-ferroic(i.e.,a composite of ferroic glass and ferroic crystal),can be produced by the crystallization transition of ferroic glasses.It can have a superior property not possessed by its two components.These three classes of ferroic materials(ferroic crystal,ferroic glass and glass-ferroic)correspond to three transitions(ferroic phase transition,ferroic glass transition and crystallization transition of ferroic glass,respectively),as demonstrated in a generic temperature vs.defectconcentration phase diagram.Moreover,through constructing a phase field model,the microstructure evolution of three transitions and the phase diagram can be reproduced,which reveals the important role of point defects in the formation of ferroic glass and glass-ferroic.The phase diagram can be used to design various ferroic glasses and glass-ferroics that may exhibit unusual properties.

关 键 词：GLASSES GLASS CRYSTALLIZATION 

分 类 号：TQ1[化学工程]