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

Journal Article


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 ¼{010} superlattice diffraction reflections and electrical characteristic of double polarization-electric (P-E) hysteresis were observed.

UOW Authors


  •   Gao, Lisheng (external author)
  •   Guo, Hanzheng (external author)
  •   Zhang, Shujun
  •   Randall, Clive A. (external author)

Publication Date


  • 2016

Citation


  • Gao, L., Guo, H., Zhang, S. & Randall, C. A. (2016). A perovskite lead-free antiferroelectric xCaHfO3-(1-x) NaNbO3 with induced double hysteresis loops at room temperature. Journal of Applied Physics, 120 (20), 204102-1-204102 -6.

Scopus Eid


  • 2-s2.0-85001084843

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2365

Has Global Citation Frequency


Start Page


  • 204102-1

End Page


  • 204102 -6

Volume


  • 120

Issue


  • 20

Place Of Publication


  • United States

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 ¼{010} superlattice diffraction reflections and electrical characteristic of double polarization-electric (P-E) hysteresis were observed.

UOW Authors


  •   Gao, Lisheng (external author)
  •   Guo, Hanzheng (external author)
  •   Zhang, Shujun
  •   Randall, Clive A. (external author)

Publication Date


  • 2016

Citation


  • Gao, L., Guo, H., Zhang, S. & Randall, C. A. (2016). A perovskite lead-free antiferroelectric xCaHfO3-(1-x) NaNbO3 with induced double hysteresis loops at room temperature. Journal of Applied Physics, 120 (20), 204102-1-204102 -6.

Scopus Eid


  • 2-s2.0-85001084843

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2365

Has Global Citation Frequency


Start Page


  • 204102-1

End Page


  • 204102 -6

Volume


  • 120

Issue


  • 20

Place Of Publication


  • United States