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Jo, Wook
Sustainable Functional Ceramics Lab
Research Interests
  • Lead-free piezoceramics, ultra - low temperature sintering, ferroelectrics, relaxor ferroelectrics, 2D materials, magnetoelectric materials, multiferroics

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Giant electric-field-induced strains in lead-free ceramics for actuator applications - status and perspective

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Title
Giant electric-field-induced strains in lead-free ceramics for actuator applications - status and perspective
Author
Jo, WookDittmer, RobertAcosta, MatiasZang, JiadongGroh, ClaudiaSapper, EvaWang, KeRoedel, Juergen
Keywords
Actuator; Bismuth sodium titanate; Electric-field-induced phase transition; Giant electric-field-induced strain; Incipient piezoelectric; Lead-free piezoceramics; Relaxor ferroelectric
Issue Date
2012-08
Publisher
SPRINGER
Citation
JOURNAL OF ELECTROCERAMICS, v.29, no.1, pp.71 - 93
Abstract
In response to the current environmental regulations against the use of lead in daily electronic devices, a number of investigations have been performed worldwide in search for alternative piezoelectric ceramics that can replace the market-dominating lead-based ones, representatively Pb(Zr (x) Ti1-x )O-3 (PZT)-based solid solutions. Selected systems of potential importance such as chemically modified and/or crystallographically textured (K, Na)NbO3 and (Bi1/2Na1/2)TiO3-based solid solutions have been developed. Nevertheless, only few achievements have so far been introduced to the marketplace. A recent discovery has greatly extended our tool box for material design by furnishing (Bi1/2Na1/2)TiO3-based ceramics with a reversible phase transition between an ergodic relaxor state and a ferroelectric with the application of electric field. This paired the piezoelectric effect with a strain-generating phase transition and extended opportunities for actuator applications in a completely new manner. In this contribution, we will present the status and perspectives of this new class of actuator ceramics, aiming at covering a wide spectrum of topics, i.e., from fundamentals to practice.
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DOI
10.1007/s10832-012-9742-3
ISSN
1385-3449
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MSE_Journal Papers
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