BiFeO3-BaTiO3: A new generation of lead-free electroceramics

Lead-based electroceramics such as Pb(Zr.Ti)O3 (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 titana...

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Bibliographic Details
Published in:Journal of advanced dielectrics 2018-12, Vol.8 (6), p.1830004-1-1830004-35
Main Authors: Wang, Dawei, Wang, Ge, Murakami, Shunsuke, Fan, Zhongming, Feteira, Antonio, Zhou, Di, Sun, Shikuan, Zhao, Quanliang, Reaney, Ian M.
Format: Article
Language:English
Subjects:
Actuators
Barium titanates
BiFeO3-BaTiO3
Bismuth ferrite
Bismuth titanate
capacitors
Ceramics
dielectrics
Energy storage
Heat treatment
Lead free
Lead zirconate titanates
Multilayers
Organic chemistry
Piezoelectricity
piezoelectrics
Properties (attributes)
Zirconium
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Summary:Lead-based electroceramics such as Pb(Zr.Ti)O3 (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 BiFeO3-BaTiO3 (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.
ISSN:2010-135X
2010-1368
DOI:10.1142/S2010135X18300049