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BiFeO_(3)-BaTiO_(3):A new generation of lead-free electroceramics 被引量:5
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作者 Dawei Wang Ge Wang +6 位作者 shunsuke murakami Zhongming Fan Antonio Feteira Di Zhou Shikuan Sun Quanliang Zhao Ian M.Reaney 《Journal of Advanced Dielectrics》 CAS 2018年第6期8-42,共35页
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 rep... 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. 展开更多
关键词 BiFeO_(3)-BaTiO_(3) LEAD-FREE PIEZOELECTRICS energy storage dielectrics capacitors
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