BiFeO_(3)-BaTiO_(3):A new generation of lead-free electroceramics  

作　　者：Dawei Wang Ge Wang Shunsuke Murakami Zhongming Fan Antonio Feteira Di Zhou Shikuan Sun Quanliang Zhao Ian M.Reaney 

机构地区：[1]Department of Materials Science and Engineering University of Sheffield,Sheffield S13JD,UK [2]Department of Materials Science and Engineering Iowa State University,Ames,Iowa 50011,USA [3]Christian Doppler Laboratory for Advanced Ferroic Oxides Sheffield Hallam University,Sheffield S11WB,UK [4]Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education&International Center for Dielectric Research Xi’an Jiaotong University,Xi’an 710049,Shaanxi,P.R.China [5]School of Mechanical and Materials Engineering North China University of Technology Beijing 100144,P.R.China

出　　处：《Journal of Advanced Dielectrics》2018年第6期8-42,共35页先进电介质学报（英文）

基　　金：supported by the Engineering and Physical Sciences Research Council(EP/L017563/1 and EP/N010493/1)and National Natural Science Foundation of China(51602060 and 51402005).D.Wang,G.Wang and S.Murakami contributed equally to this work and should be considered as co-first authors.

摘　　要：Lead-based electroceramics such as Pb(Zr.Ti)O_(3)(PZT)and its derivatives have excellent piezoelectric,pyroelectric and energy storage properties and can be used in a wide range of applications.Potential lead-free replacements for PZT such as potassium sodium niobate(KNN)and sodium bismuth titanate(NBT)have a much more limited range of useful properties and have been optimized primarily for piezoelectric applications.Here,we review the initial results on a new generation of lead-free electroceramics based on BiFeO_(3)-BaTiO_(3)(BF-BT)highlighting the essential crystal chemistry that permits a wide range of functional properties.We demonstrate that with the appropriate dopants and heat treatment,BF-BT can be used to fabricate commercially viable ceramics for applications,ranging from sensors,multilayer actuators,capacitors and high-density energy storage devices.We also assess the potential of BF-BT-based ceramics for electrocaloric and pyroelectric applications.

关 键 词：BiFeO_(3)-BaTiO_(3) LEAD-FREE PIEZOELECTRICS energy storage dielectrics capacitors 

分 类 号：TQ1[化学工程]