New insights into suppression of intermediate incommensurate phase in lead zirconate stannate titanate antiferroelectric system

Adukkadan, A and Saha, S and Lalla, NP and Ranjan, R and Kumar, V (2023) New insights into suppression of intermediate incommensurate phase in lead zirconate stannate titanate antiferroelectric system. In: Journal of Materials Science, 58 (21). pp. 8878-8888.

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Abstract

Abstract: Many compositions in the complex perovskite system, Pb(Zr1-x-ySnxTiy)O3, exhibit successive transitions to antiferroelectric (AFE) and ferroelectric (FE) phases on cooling from the high-temperature paraelectric (PE) phase. In such systems an intermediate incommensurate (ICM) phase has been reported to act as a bridge between AFE and FE phases. In this study we report a detailed investigation of the emergence of ferroelectric order in the ICM phase brought about by B-site acceptor dopants in a typical composition Pb(Zr0.60Sn0.30Ti0.10)O3 (PZST). As the ICM phase passes through the temperature-driven ferroelectric rhombohedral-ICM phase, we closely examine it by temperature-dependent electron diffraction, X-ray diffraction, polarization-electric field (P-E) hysteresis behaviour and dielectric studies. We also investigate the nature of the local defect structure around the acceptor-doped sites by electron paramagnetic resonance (EPR) analysis and propose a model to explain the stabilization of the FE phase.

Item Type:	Journal Article
Publication:	Journal of Materials Science
Publisher:	Springer
Additional Information:	The copyright for this article belongs to Springer.
Keywords:	Antiferroelectricity; Antiferromagnetism; Electric fields; Electron spin resonance spectroscopy; Ferroelectricity; Lead compounds; Perovskite; Tin compounds; Zirconium compounds, Anti ferroelectrics; Antiferroelectric phasis; Complex perovskites; Ferroelectric order; Ferroelectric phasis; Highest temperature; Incommensurate phase; Lead zirconate stannate titanates; Paraelectric phasis; Successive transitions, Paramagnetic resonance
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	15 Jun 2023 10:17
Last Modified:	15 Jun 2023 10:17
URI:	https://eprints.iisc.ac.in/id/eprint/82057

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