A perovskite lead-free antiferroelectric xCaHfO3-(1-x) NaNbO3 with induced double hysteresis loops at room temperature

Lisheng Gao, Hanzheng Guo, Shujun Zhang, Clive A. Randall

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We demonstrated a new CaHfO3-NaNbO3 solid solution system that allows stable antiferroelectric (AFE) (P) phase to exist under ambient conditions. Based on crystal chemistry viewpoint of relative change of the Goldschmidt tolerance factor (t) and polarizability, two new solid solutions were fabricated using the perovskite end member CaHfO3. It was found that the CaHfO3 effectively stabilized the antiferroelectric (AFE) P phase in NaNbO3. In this article, electrical properties and transmission electron microscopy experiments were conducted to verify the stabilization and enhancement of antiferroelectric behavior over the various solid solutions, where both structural signature of {010} superlattice diffraction reflections and electrical characteristic of double polarization-electric (P-E) hysteresis were observed.

Original languageEnglish (US)
Article number204102
JournalJournal of Applied Physics
Volume120
Issue number20
DOIs
StatePublished - Nov 28 2016

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solid solutions
hysteresis
room temperature
stabilization
electrical properties
signatures
chemistry
transmission electron microscopy
augmentation
polarization
diffraction
crystals

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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A perovskite lead-free antiferroelectric xCaHfO3-(1-x) NaNbO3 with induced double hysteresis loops at room temperature. / Gao, Lisheng; Guo, Hanzheng; Zhang, Shujun; Randall, Clive A.

In: Journal of Applied Physics, Vol. 120, No. 20, 204102, 28.11.2016.

Research output: Contribution to journalArticle

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AU - Randall, Clive A.

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AB - We demonstrated a new CaHfO3-NaNbO3 solid solution system that allows stable antiferroelectric (AFE) (P) phase to exist under ambient conditions. Based on crystal chemistry viewpoint of relative change of the Goldschmidt tolerance factor (t) and polarizability, two new solid solutions were fabricated using the perovskite end member CaHfO3. It was found that the CaHfO3 effectively stabilized the antiferroelectric (AFE) P phase in NaNbO3. In this article, electrical properties and transmission electron microscopy experiments were conducted to verify the stabilization and enhancement of antiferroelectric behavior over the various solid solutions, where both structural signature of {010} superlattice diffraction reflections and electrical characteristic of double polarization-electric (P-E) hysteresis were observed.

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