Role of Na-doping-induced oxygen vacancies in the variation of electrical properties of NiO ceramics

Seojin Yang; Jiwoong Kim; Sehwan Song; Dooyong Lee; Tae Seong Ju; Jong Seong Bae; Sungkyun Park

doi:10.1016/j.ceramint.2017.06.037

Role of Na-doping-induced oxygen vacancies in the variation of electrical properties of NiO ceramics

Seojin Yang, Jiwoong Kim, Sehwan Song, Dooyong Lee, Tae Seong Ju, Jong Seong Bae, Sungkyun Park

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Abstract

Na-doping concentration dependent electrical and structural properties of NiO ceramics were investigated. Various samples of Na_xNi_1−xO (x = 0.00, 0.01, 0.03, 0.05, 0.07, 0.09, 0.11) were prepared by using conventional solid state reaction. Most of the samples showed the decreased electrical resistivity with the increase of the Na-doping concentration while maintaining phase-pure face-centered cubic (fcc) structure, except in the case of the sample containing 11% of Na. For the sample containing 11% of Na, the electrical resistivity slightly increased due to the presence of secondary phase. The possible physical origin of this reduced electrical resistivity is related to the increased number of oxygen vacancies, with the increase of the Na-doping concentration for phase-pure Na_xNi_1−xO ceramics.

Original language	English
Pages (from-to)	11898-11901
Number of pages	4
Journal	Ceramics International
Volume	43
Issue number	15
DOIs	https://doi.org/10.1016/j.ceramint.2017.06.037
State	Published - 15 Oct 2017

Keywords

Dopant
NaNiO
Oxygen vacancies
Resistivity

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10.1016/j.ceramint.2017.06.037

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title = "Role of Na-doping-induced oxygen vacancies in the variation of electrical properties of NiO ceramics",

abstract = "Na-doping concentration dependent electrical and structural properties of NiO ceramics were investigated. Various samples of NaxNi1−xO (x = 0.00, 0.01, 0.03, 0.05, 0.07, 0.09, 0.11) were prepared by using conventional solid state reaction. Most of the samples showed the decreased electrical resistivity with the increase of the Na-doping concentration while maintaining phase-pure face-centered cubic (fcc) structure, except in the case of the sample containing 11% of Na. For the sample containing 11% of Na, the electrical resistivity slightly increased due to the presence of secondary phase. The possible physical origin of this reduced electrical resistivity is related to the increased number of oxygen vacancies, with the increase of the Na-doping concentration for phase-pure NaxNi1−xO ceramics.",

keywords = "Dopant, NaNiO, Oxygen vacancies, Resistivity",

author = "Seojin Yang and Jiwoong Kim and Sehwan Song and Dooyong Lee and Ju, {Tae Seong} and Bae, {Jong Seong} and Sungkyun Park",

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doi = "10.1016/j.ceramint.2017.06.037",

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T1 - Role of Na-doping-induced oxygen vacancies in the variation of electrical properties of NiO ceramics

AU - Yang, Seojin

AU - Kim, Jiwoong

AU - Song, Sehwan

AU - Lee, Dooyong

AU - Ju, Tae Seong

AU - Bae, Jong Seong

AU - Park, Sungkyun

PY - 2017/10/15

Y1 - 2017/10/15

N2 - Na-doping concentration dependent electrical and structural properties of NiO ceramics were investigated. Various samples of NaxNi1−xO (x = 0.00, 0.01, 0.03, 0.05, 0.07, 0.09, 0.11) were prepared by using conventional solid state reaction. Most of the samples showed the decreased electrical resistivity with the increase of the Na-doping concentration while maintaining phase-pure face-centered cubic (fcc) structure, except in the case of the sample containing 11% of Na. For the sample containing 11% of Na, the electrical resistivity slightly increased due to the presence of secondary phase. The possible physical origin of this reduced electrical resistivity is related to the increased number of oxygen vacancies, with the increase of the Na-doping concentration for phase-pure NaxNi1−xO ceramics.

AB - Na-doping concentration dependent electrical and structural properties of NiO ceramics were investigated. Various samples of NaxNi1−xO (x = 0.00, 0.01, 0.03, 0.05, 0.07, 0.09, 0.11) were prepared by using conventional solid state reaction. Most of the samples showed the decreased electrical resistivity with the increase of the Na-doping concentration while maintaining phase-pure face-centered cubic (fcc) structure, except in the case of the sample containing 11% of Na. For the sample containing 11% of Na, the electrical resistivity slightly increased due to the presence of secondary phase. The possible physical origin of this reduced electrical resistivity is related to the increased number of oxygen vacancies, with the increase of the Na-doping concentration for phase-pure NaxNi1−xO ceramics.

KW - Dopant

KW - NaNiO

KW - Oxygen vacancies

KW - Resistivity

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DO - 10.1016/j.ceramint.2017.06.037

M3 - Article

AN - SCOPUS:85020377325

SN - 0272-8842

VL - 43

SP - 11898

EP - 11901

JO - Ceramics International

JF - Ceramics International

IS - 15

ER -

Role of Na-doping-induced oxygen vacancies in the variation of electrical properties of NiO ceramics

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Keywords

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