X-ray diffraction and infrared studies of FexMn2.34-xNi0.66O4 (0

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

doi:10.1016/j.jeurceramsoc.2005.05.007

X-ray diffraction and infrared studies of FexMn2.34-xNi0.66O4 (0

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

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Abstract

Series of FexMn2.34−xNi0.66O4 (0 < x < 1) NTC ceramics were prepared by the Pechini method. Resistivity, thermal constant (B) and aging values were measured. It was found that the resistivity increased with increasing iron content x. The B value however first decreased with increasing x in the range of x < 0.6 and then increased with further increase in x. Aging reached a maximum in the middle range (x = 0.4–0.6) of iron content. X-ray diffraction (XRD) and infrared analysis were used to determine the distribution of Fe3+ ions. The Fe3+ ions were found to occupy both A- and B-site when x < 0.6 and then go to B-site when x > 0.6. An redistribution of the Fe3+ ions between A- and B-site was related to the aging of the NTC thermistor.

Original language	English
Pages (from-to)	2833-2837
Journal	Journal of the European Ceramic Society
Volume	26
Issue number	13
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2005.05.007
Publication status	Published - 2006

Keywords

2024 OA procedure

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10.1016/j.jeurceramsoc.2005.05.007

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title = "X-ray diffraction and infrared studies of FexMn2.34-xNi0.66O4 (0",

abstract = "Series of FexMn2.34−xNi0.66O4 (0 < x < 1) NTC ceramics were prepared by the Pechini method. Resistivity, thermal constant (B) and aging values were measured. It was found that the resistivity increased with increasing iron content x. The B value however first decreased with increasing x in the range of x < 0.6 and then increased with further increase in x. Aging reached a maximum in the middle range (x = 0.4–0.6) of iron content. X-ray diffraction (XRD) and infrared analysis were used to determine the distribution of Fe3+ ions. The Fe3+ ions were found to occupy both A- and B-site when x < 0.6 and then go to B-site when x > 0.6. An redistribution of the Fe3+ ions between A- and B-site was related to the aging of the NTC thermistor.",

keywords = "2024 OA procedure",

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

year = "2006",

doi = "10.1016/j.jeurceramsoc.2005.05.007",

language = "English",

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pages = "2833--2837",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

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TY - JOUR

T1 - X-ray diffraction and infrared studies of FexMn2.34-xNi0.66O4 (0

AU - Wang, Zhongbing

AU - Zhao, Chunhua

AU - Yang, Pinghua

AU - Winnubst, A.J.A.

AU - Chen, Chusheng

PY - 2006

Y1 - 2006

N2 - Series of FexMn2.34−xNi0.66O4 (0 < x < 1) NTC ceramics were prepared by the Pechini method. Resistivity, thermal constant (B) and aging values were measured. It was found that the resistivity increased with increasing iron content x. The B value however first decreased with increasing x in the range of x < 0.6 and then increased with further increase in x. Aging reached a maximum in the middle range (x = 0.4–0.6) of iron content. X-ray diffraction (XRD) and infrared analysis were used to determine the distribution of Fe3+ ions. The Fe3+ ions were found to occupy both A- and B-site when x < 0.6 and then go to B-site when x > 0.6. An redistribution of the Fe3+ ions between A- and B-site was related to the aging of the NTC thermistor.

AB - Series of FexMn2.34−xNi0.66O4 (0 < x < 1) NTC ceramics were prepared by the Pechini method. Resistivity, thermal constant (B) and aging values were measured. It was found that the resistivity increased with increasing iron content x. The B value however first decreased with increasing x in the range of x < 0.6 and then increased with further increase in x. Aging reached a maximum in the middle range (x = 0.4–0.6) of iron content. X-ray diffraction (XRD) and infrared analysis were used to determine the distribution of Fe3+ ions. The Fe3+ ions were found to occupy both A- and B-site when x < 0.6 and then go to B-site when x > 0.6. An redistribution of the Fe3+ ions between A- and B-site was related to the aging of the NTC thermistor.

KW - 2024 OA procedure

U2 - 10.1016/j.jeurceramsoc.2005.05.007

DO - 10.1016/j.jeurceramsoc.2005.05.007

M3 - Article

SN - 0955-2219

VL - 26

SP - 2833

EP - 2837

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 13

ER -

X-ray diffraction and infrared studies of FexMn2.34-xNi0.66O4 (0

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