Coexistence of piezoelectricity and electric conduction in oxygen-deficient NaNbO3-δ sub-micron cubes

B. K. Yun; Y. K. Park; P. G. Kang; J. H. Jung; N. Lee; W. Jo; H. Shin; S. Yoon

doi:10.1016/j.mseb.2013.12.002

Coexistence of piezoelectricity and electric conduction in oxygen-deficient NaNbO_3-δ sub-micron cubes

B. K. Yun, Y. K. Park, P. G. Kang, J. H. Jung, N. Lee, W. Jo, H. Shin, S. Yoon

Department of Physics

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We have investigated the effect of oxygen vacancy on the structural and electrical properties of NaNbO₃ sub-micron cubes. Through the Rietveld analysis and Raman scattering, we have confirmed that both NaNbO ₃ and oxygen deficient NaNbO_3-δ have Pmc2 ₁ symmetry, which has no space-inversion. The oxygen vacancy seems to induce the change from the ferroelectricity of NaNbO₃ to the piezoelectricity of NaNbO_3-δ and the increase of electric conduction. This work may provide the plausible way to realize sub-micron-size lead-free piezoelectric semiconductors with perovskite structure, which should be quite useful for piezoelectric energy harvesting, switchable diode, and photovoltaic applications.

Original language	English
Pages (from-to)	81-85
Number of pages	5
Journal	Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume	182
Issue number	1
DOIs	https://doi.org/10.1016/j.mseb.2013.12.002
State	Published - Mar 2014

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2012R1A1A2002536 ).

Keywords

Electric conduction
Oxygen vacancy
Piezoelectricity

Access to Document

10.1016/j.mseb.2013.12.002

Cite this

@article{7022113588d8407b838265a71fa0b57b,

title = "Coexistence of piezoelectricity and electric conduction in oxygen-deficient NaNbO3-δ sub-micron cubes",

abstract = "We have investigated the effect of oxygen vacancy on the structural and electrical properties of NaNbO3 sub-micron cubes. Through the Rietveld analysis and Raman scattering, we have confirmed that both NaNbO 3 and oxygen deficient NaNbO3-δ have Pmc2 1 symmetry, which has no space-inversion. The oxygen vacancy seems to induce the change from the ferroelectricity of NaNbO3 to the piezoelectricity of NaNbO3-δ and the increase of electric conduction. This work may provide the plausible way to realize sub-micron-size lead-free piezoelectric semiconductors with perovskite structure, which should be quite useful for piezoelectric energy harvesting, switchable diode, and photovoltaic applications.",

keywords = "Electric conduction, Oxygen vacancy, Piezoelectricity",

author = "Yun, \{B. K.\} and Park, \{Y. K.\} and Kang, \{P. G.\} and Jung, \{J. H.\} and N. Lee and W. Jo and H. Shin and S. Yoon",

note = "Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2012R1A1A2002536 ).",

year = "2014",

month = mar,

doi = "10.1016/j.mseb.2013.12.002",

language = "English",

volume = "182",

pages = "81--85",

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T1 - Coexistence of piezoelectricity and electric conduction in oxygen-deficient NaNbO3-δ sub-micron cubes

AU - Yun, B. K.

AU - Park, Y. K.

AU - Kang, P. G.

AU - Jung, J. H.

AU - Lee, N.

AU - Jo, W.

AU - Shin, H.

AU - Yoon, S.

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2012R1A1A2002536 ).

PY - 2014/3

Y1 - 2014/3

N2 - We have investigated the effect of oxygen vacancy on the structural and electrical properties of NaNbO3 sub-micron cubes. Through the Rietveld analysis and Raman scattering, we have confirmed that both NaNbO 3 and oxygen deficient NaNbO3-δ have Pmc2 1 symmetry, which has no space-inversion. The oxygen vacancy seems to induce the change from the ferroelectricity of NaNbO3 to the piezoelectricity of NaNbO3-δ and the increase of electric conduction. This work may provide the plausible way to realize sub-micron-size lead-free piezoelectric semiconductors with perovskite structure, which should be quite useful for piezoelectric energy harvesting, switchable diode, and photovoltaic applications.

AB - We have investigated the effect of oxygen vacancy on the structural and electrical properties of NaNbO3 sub-micron cubes. Through the Rietveld analysis and Raman scattering, we have confirmed that both NaNbO 3 and oxygen deficient NaNbO3-δ have Pmc2 1 symmetry, which has no space-inversion. The oxygen vacancy seems to induce the change from the ferroelectricity of NaNbO3 to the piezoelectricity of NaNbO3-δ and the increase of electric conduction. This work may provide the plausible way to realize sub-micron-size lead-free piezoelectric semiconductors with perovskite structure, which should be quite useful for piezoelectric energy harvesting, switchable diode, and photovoltaic applications.

KW - Electric conduction

KW - Oxygen vacancy

KW - Piezoelectricity

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DO - 10.1016/j.mseb.2013.12.002

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