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Transactions of the Indian Ceramic Society Volume 79, 2020 - Issue 3
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Articles

Influence of Lattice Strain on Phase Transition and Piezoelectric Properties of Lead-Free (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 Ceramics

Elugu Chandrakalaa School of Engineering Sciences and Technology, University of Hyderabad, Hyderabad500046, India
,
Paul Praveen Johna School of Engineering Sciences and Technology, University of Hyderabad, Hyderabad500046, India;b Department of Physics, Vel Tech Rangarajan Dr Sagunthala R & D Institute of Science and Technology, Chennai600062, India
,
Parthiban Palania School of Engineering Sciences and Technology, University of Hyderabad, Hyderabad500046, India
,
Murugesan Ganesanb Department of Physics, Vel Tech Rangarajan Dr Sagunthala R & D Institute of Science and Technology, Chennai600062, India
&
Dibakar Dasa School of Engineering Sciences and Technology, University of Hyderabad, Hyderabad500046, IndiaCorrespondence[email protected]
Pages 144-151 | Received 19 Jul 2019, Accepted 11 Jun 2020, Published online: 14 Sep 2020
 
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ABSTRACT

Substitution in A or/and B sites of the perovskite lattice, or strain engineering is known to influence the properties of piezoelectric ceramics. Cerium (Ce) has been identified as a substituent to investigate the properties of lead-free (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 (BCZT) ceramics. Structural, ferroelectric, piezoelectric and dielectric properties of Ce substituted BCZT ceramics were investigated systematically and were correlated with the strain induced structural phase transition. Ce substituted for Ti in BCZT ceramics showed coexistence and larger phase fractions of tetragonal and rhombohedral phases and exhibited enhanced piezoelectric and dielectric responses, d33 ∼703 pC/N, g33 ∼16 mV.m/N, kp ∼61% and Tc∼ 123°C.

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