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Tuning oxygen vacancy in LiNbO3 single crystals for prominent memristive and dielectric behaviors

Journal Article


Abstract


  • Understanding and manipulating the behavior of oxygen vacancy in oxide materials are of vital importance for rejuvenating materials with novel functionalities. We herein report a exciting phenomenon of oxygen vacancies changing from an isolated state to a clustered state in LiNbO 3 single crystals. The clustering of the oxygen vacancies induces a relaxor-like dielectric anomaly and a first-order phase transition. The relaxor-like dielectric anomaly was argued to be a pseudo-relaxor behavior resulting from the combined contributions of a dipolar relaxation and a Maxwell-Wagner relaxation. The first-order phase transition was ascribed to be an electric-ferroelectric phase transition. Interestingly, a well-defined melting point of the oxygen-vacancy clusters was observed. At temperatures near the point, a small dc field can lead to resistance switching from a high resistance state to a low resistance state, yielding a prominent memristive effect with the OFF/ON ratio of 10 2 . Our results underscore that controlling the oxygen vacancy state is a promising strategy to tailor the properties of oxides for novel device applications.

UOW Authors


  •   Wang, Chunchang (external author)
  •   Sun, Jie (external author)
  •   Ni, Wei (external author)
  •   Yue, Binbin (external author)
  •   Hong, Fang (external author)
  •   Liu, Hong (external author)
  •   Cheng, Zhenxiang

Publication Date


  • 2019

Citation


  • Wang, C., Sun, J., Ni, W., Yue, B., Hong, F., Liu, H. & Cheng, Z. (2019). Tuning oxygen vacancy in LiNbO3 single crystals for prominent memristive and dielectric behaviors. Journal of the American Ceramic Society, 102 (11), 6705-6712.

Scopus Eid


  • 2-s2.0-85065717918

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3767

Number Of Pages


  • 7

Start Page


  • 6705

End Page


  • 6712

Volume


  • 102

Issue


  • 11

Place Of Publication


  • United States

Abstract


  • Understanding and manipulating the behavior of oxygen vacancy in oxide materials are of vital importance for rejuvenating materials with novel functionalities. We herein report a exciting phenomenon of oxygen vacancies changing from an isolated state to a clustered state in LiNbO 3 single crystals. The clustering of the oxygen vacancies induces a relaxor-like dielectric anomaly and a first-order phase transition. The relaxor-like dielectric anomaly was argued to be a pseudo-relaxor behavior resulting from the combined contributions of a dipolar relaxation and a Maxwell-Wagner relaxation. The first-order phase transition was ascribed to be an electric-ferroelectric phase transition. Interestingly, a well-defined melting point of the oxygen-vacancy clusters was observed. At temperatures near the point, a small dc field can lead to resistance switching from a high resistance state to a low resistance state, yielding a prominent memristive effect with the OFF/ON ratio of 10 2 . Our results underscore that controlling the oxygen vacancy state is a promising strategy to tailor the properties of oxides for novel device applications.

UOW Authors


  •   Wang, Chunchang (external author)
  •   Sun, Jie (external author)
  •   Ni, Wei (external author)
  •   Yue, Binbin (external author)
  •   Hong, Fang (external author)
  •   Liu, Hong (external author)
  •   Cheng, Zhenxiang

Publication Date


  • 2019

Citation


  • Wang, C., Sun, J., Ni, W., Yue, B., Hong, F., Liu, H. & Cheng, Z. (2019). Tuning oxygen vacancy in LiNbO3 single crystals for prominent memristive and dielectric behaviors. Journal of the American Ceramic Society, 102 (11), 6705-6712.

Scopus Eid


  • 2-s2.0-85065717918

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3767

Number Of Pages


  • 7

Start Page


  • 6705

End Page


  • 6712

Volume


  • 102

Issue


  • 11

Place Of Publication


  • United States