Effects of Cu and Zn co-doping on the electrical properties of Ni0.5Mn2.5O4 NTC ceramics

Chunhua Zhao; Biyun Wang; Aloysius J.A. Winnubst; Pinghua Yang; Chusheng Chen

doi:10.1016/j.jeurceramsoc.2007.06.007

Effects of Cu and Zn co-doping on the electrical properties of Ni0.5Mn2.5O4 NTC ceramics

Chunhua Zhao, Biyun Wang, Aloysius J.A. Winnubst, Pinghua Yang, Chusheng Chen

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

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Abstract

The effects of Cu and Zn co-doping on Ni–Mn–O spinel-structured NTC ceramics were investigated. Dense Cu and Zn co-doped Ni0.5Mn2.5O4 spinel-structured ceramics were prepared from mixed oxalate-derived powders. XPS analysis revealed that in the co-doped material CuxZn1.0Ni0.5Mn1.5−xO4, the majority of Cu ions resided at the B-sites due to the almost exclusive occupation of Zn ions at the A-sites, but in the material doped with Cu alone, Cu ions were situated at both A- and B-sites. The co-doped material exhibited a significant decrease in electrical resistivity without much decrease in the thermal constant. In comparison with the material doped with Cu alone, the co-doped material also showed much improved electrical stability upon annealing at 150 °C in air, which is attributed to its stable distribution of cations in the spinel

Original language	Undefined
Pages (from-to)	35-40
Journal	Journal of the European Ceramic Society
Volume	28
Issue number	1
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2007.06.007
Publication status	Published - 2008

Keywords

IR-71884
METIS-250430

Access to Document

10.1016/j.jeurceramsoc.2007.06.007

Cite this

@article{0bf15c1f30a542bc8b52b4fee9b87500,

title = "Effects of Cu and Zn co-doping on the electrical properties of Ni0.5Mn2.5O4 NTC ceramics",

abstract = "The effects of Cu and Zn co-doping on Ni–Mn–O spinel-structured NTC ceramics were investigated. Dense Cu and Zn co-doped Ni0.5Mn2.5O4 spinel-structured ceramics were prepared from mixed oxalate-derived powders. XPS analysis revealed that in the co-doped material CuxZn1.0Ni0.5Mn1.5−xO4, the majority of Cu ions resided at the B-sites due to the almost exclusive occupation of Zn ions at the A-sites, but in the material doped with Cu alone, Cu ions were situated at both A- and B-sites. The co-doped material exhibited a significant decrease in electrical resistivity without much decrease in the thermal constant. In comparison with the material doped with Cu alone, the co-doped material also showed much improved electrical stability upon annealing at 150 °C in air, which is attributed to its stable distribution of cations in the spinel",

keywords = "IR-71884, METIS-250430",

author = "Chunhua Zhao and Biyun Wang and Winnubst, {Aloysius J.A.} and Pinghua Yang and Chusheng Chen",

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journal = "Journal of the European Ceramic Society",

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TY - JOUR

T1 - Effects of Cu and Zn co-doping on the electrical properties of Ni0.5Mn2.5O4 NTC ceramics

AU - Zhao, Chunhua

AU - Wang, Biyun

AU - Winnubst, Aloysius J.A.

AU - Yang, Pinghua

AU - Chen, Chusheng

PY - 2008

Y1 - 2008

N2 - The effects of Cu and Zn co-doping on Ni–Mn–O spinel-structured NTC ceramics were investigated. Dense Cu and Zn co-doped Ni0.5Mn2.5O4 spinel-structured ceramics were prepared from mixed oxalate-derived powders. XPS analysis revealed that in the co-doped material CuxZn1.0Ni0.5Mn1.5−xO4, the majority of Cu ions resided at the B-sites due to the almost exclusive occupation of Zn ions at the A-sites, but in the material doped with Cu alone, Cu ions were situated at both A- and B-sites. The co-doped material exhibited a significant decrease in electrical resistivity without much decrease in the thermal constant. In comparison with the material doped with Cu alone, the co-doped material also showed much improved electrical stability upon annealing at 150 °C in air, which is attributed to its stable distribution of cations in the spinel

AB - The effects of Cu and Zn co-doping on Ni–Mn–O spinel-structured NTC ceramics were investigated. Dense Cu and Zn co-doped Ni0.5Mn2.5O4 spinel-structured ceramics were prepared from mixed oxalate-derived powders. XPS analysis revealed that in the co-doped material CuxZn1.0Ni0.5Mn1.5−xO4, the majority of Cu ions resided at the B-sites due to the almost exclusive occupation of Zn ions at the A-sites, but in the material doped with Cu alone, Cu ions were situated at both A- and B-sites. The co-doped material exhibited a significant decrease in electrical resistivity without much decrease in the thermal constant. In comparison with the material doped with Cu alone, the co-doped material also showed much improved electrical stability upon annealing at 150 °C in air, which is attributed to its stable distribution of cations in the spinel

KW - IR-71884

KW - METIS-250430

U2 - 10.1016/j.jeurceramsoc.2007.06.007

DO - 10.1016/j.jeurceramsoc.2007.06.007

M3 - Article

VL - 28

SP - 35

EP - 40

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

IS - 1

ER -