Effect of annealing in O2 or N2 on the aging of Fe0.5Mn1.84Ni0.66O4 NTC-ceramics

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

doi:10.1016/j.ssi.2006.01.037

Effect of annealing in O2 or N2 on the aging of Fe0.5Mn1.84Ni0.66O4 NTC-ceramics

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

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

17 Citations (Scopus)

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Abstract

Fe0.5Mn1.84Ni0.66O4 NTC ceramic thermistors were annealed in nitrogen or oxygen atmosphere at 600 °C. The change of the electrical properties of the thermistors with time was reduced sharply by annealing in N2, whereas it was enhanced upon annealing in O2. N2-annealed samples exhibited a less degree of redistribution of cations in the lattice as compared with O2-annealed samples. The aging of the electrical properties is believed to result from the cation redistribution which in turn is favoured by the presence of cation vacancies. And the improved aging behaviour of the N2-annealed thermistor is explained by the reduction of the concentration of the cation vacancy upon annealing under lower oxygen partial pressure and the suppression of cation redistribution.

Original language	Undefined
Pages (from-to)	2191-2194
Journal	Solid state ionics
Volume	177
Issue number	19-25
DOIs	https://doi.org/10.1016/j.ssi.2006.01.037
Publication status	Published - 2006

Keywords

METIS-235223
IR-71890

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10.1016/j.ssi.2006.01.037

effect_of_annealing

17 Citations
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Effect of Annealing in O₂ or N₂ on the aging of Fe_0.5Mn_1.84Ni_0.66O₄ NTC-Ceramics
Wang, Z., Zhao, C., Yang, P., Winnubst, A. J. A. & Chen, C., 17 Jul 2005.
Research output: Contribution to conference › Poster › Other research output

Cite this

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title = "Effect of annealing in O2 or N2 on the aging of Fe0.5Mn1.84Ni0.66O4 NTC-ceramics",

abstract = "Fe0.5Mn1.84Ni0.66O4 NTC ceramic thermistors were annealed in nitrogen or oxygen atmosphere at 600 °C. The change of the electrical properties of the thermistors with time was reduced sharply by annealing in N2, whereas it was enhanced upon annealing in O2. N2-annealed samples exhibited a less degree of redistribution of cations in the lattice as compared with O2-annealed samples. The aging of the electrical properties is believed to result from the cation redistribution which in turn is favoured by the presence of cation vacancies. And the improved aging behaviour of the N2-annealed thermistor is explained by the reduction of the concentration of the cation vacancy upon annealing under lower oxygen partial pressure and the suppression of cation redistribution.",

keywords = "METIS-235223, IR-71890",

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

note = "Solid State Ionics 15: Proceedings of the 15th International Conference on Solid State Ionics, Part I ",

year = "2006",

doi = "10.1016/j.ssi.2006.01.037",

language = "Undefined",

volume = "177",

pages = "2191--2194",

journal = "Solid state ionics",

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publisher = "Elsevier B.V.",

number = "19-25",

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TY - JOUR

T1 - Effect of annealing in O2 or N2 on the aging of Fe0.5Mn1.84Ni0.66O4 NTC-ceramics

AU - Wang, Zhongbing

AU - Wang, Zhichun

AU - Zhao, Chunhua

AU - Yang, Pinghua

AU - Winnubst, Aloysius J.A.

AU - Chen, Chusheng

N1 - Solid State Ionics 15: Proceedings of the 15th International Conference on Solid State Ionics, Part I

PY - 2006

Y1 - 2006

N2 - Fe0.5Mn1.84Ni0.66O4 NTC ceramic thermistors were annealed in nitrogen or oxygen atmosphere at 600 °C. The change of the electrical properties of the thermistors with time was reduced sharply by annealing in N2, whereas it was enhanced upon annealing in O2. N2-annealed samples exhibited a less degree of redistribution of cations in the lattice as compared with O2-annealed samples. The aging of the electrical properties is believed to result from the cation redistribution which in turn is favoured by the presence of cation vacancies. And the improved aging behaviour of the N2-annealed thermistor is explained by the reduction of the concentration of the cation vacancy upon annealing under lower oxygen partial pressure and the suppression of cation redistribution.

AB - Fe0.5Mn1.84Ni0.66O4 NTC ceramic thermistors were annealed in nitrogen or oxygen atmosphere at 600 °C. The change of the electrical properties of the thermistors with time was reduced sharply by annealing in N2, whereas it was enhanced upon annealing in O2. N2-annealed samples exhibited a less degree of redistribution of cations in the lattice as compared with O2-annealed samples. The aging of the electrical properties is believed to result from the cation redistribution which in turn is favoured by the presence of cation vacancies. And the improved aging behaviour of the N2-annealed thermistor is explained by the reduction of the concentration of the cation vacancy upon annealing under lower oxygen partial pressure and the suppression of cation redistribution.

KW - METIS-235223

KW - IR-71890

U2 - 10.1016/j.ssi.2006.01.037

DO - 10.1016/j.ssi.2006.01.037

M3 - Article

SN - 0167-2738

VL - 177

SP - 2191

EP - 2194

JO - Solid state ionics

JF - Solid state ionics

IS - 19-25

ER -

Effect of annealing in O2 or N2 on the aging of Fe0.5Mn1.84Ni0.66O4 NTC-ceramics

Abstract

Keywords

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Research output

Effect of Annealing in O2 or N2 on the aging of Fe0.5Mn1.84Ni0.66O4 NTC-Ceramics

Cite this

Effect of Annealing in O₂ or N₂ on the aging of Fe_0.5Mn_1.84Ni_0.66O₄ NTC-Ceramics