Co and Fe doping effect on negative temperature coefficient characteristics of nano-grained NiMn2O4 thick films fabricated by aerosol-deposition

Jungho Ryu; Guifang Han; Jong Pil Lee; Yun Soo Lim; Dong Soo Park; Dae Yong Jeong

doi:10.1166/jnn.2013.7232

Co and Fe doping effect on negative temperature coefficient characteristics of nano-grained NiMn₂O₄ thick films fabricated by aerosol-deposition

Jungho Ryu, Guifang Han, Jong Pil Lee, Yun Soo Lim, Dong Soo Park, Dae Yong Jeong

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

15 Scopus citations

Abstract

Spinel structured highly dense NiMn₂O₄-based (NMO) negative temperature coefficient (NTC) thermistor thick films were fabricated by aerosol-deposition at room temperature. To enhance the thermistor B constant, which represents the temperature sensitivity of the NMO thermistor material, Co and Co-Fe doping was applied. In the case of single element doping of Co, 5 mol% doped NMO showed a high B constant of over 5000 K, while undoped NMO showed ~4000 K. By doping Fe to the 5 mol% Co doped NMO, the B constant was more enhanced at over 5600 K. The aging effect on the NTC characteristics of Co doped and Fe-Co co-doped NMO thick film showed very stable resistivity-time characteristics because of the highly dense microstructure.

Original language	English
Pages (from-to)	3422-3426
Number of pages	5
Journal	Journal of Nanoscience and Nanotechnology
Volume	13
Issue number	5
DOIs	https://doi.org/10.1166/jnn.2013.7232
State	Published - May 2013

Keywords

Aerosol-deposition (AD)
Doping
NiMnO
NTC thermistor
Thick film

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title = "Co and Fe doping effect on negative temperature coefficient characteristics of nano-grained NiMn2O4 thick films fabricated by aerosol-deposition",

abstract = "Spinel structured highly dense NiMn2O4-based (NMO) negative temperature coefficient (NTC) thermistor thick films were fabricated by aerosol-deposition at room temperature. To enhance the thermistor B constant, which represents the temperature sensitivity of the NMO thermistor material, Co and Co-Fe doping was applied. In the case of single element doping of Co, 5 mol% doped NMO showed a high B constant of over 5000 K, while undoped NMO showed ~4000 K. By doping Fe to the 5 mol% Co doped NMO, the B constant was more enhanced at over 5600 K. The aging effect on the NTC characteristics of Co doped and Fe-Co co-doped NMO thick film showed very stable resistivity-time characteristics because of the highly dense microstructure.",

keywords = "Aerosol-deposition (AD), Doping, NiMnO, NTC thermistor, Thick film",

author = "Jungho Ryu and Guifang Han and Lee, {Jong Pil} and Lim, {Yun Soo} and Park, {Dong Soo} and Jeong, {Dae Yong}",

year = "2013",

month = may,

doi = "10.1166/jnn.2013.7232",

language = "English",

volume = "13",

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journal = "Journal of Nanoscience and Nanotechnology",

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T1 - Co and Fe doping effect on negative temperature coefficient characteristics of nano-grained NiMn2O4 thick films fabricated by aerosol-deposition

AU - Ryu, Jungho

AU - Han, Guifang

AU - Lee, Jong Pil

AU - Lim, Yun Soo

AU - Park, Dong Soo

AU - Jeong, Dae Yong

PY - 2013/5

Y1 - 2013/5

N2 - Spinel structured highly dense NiMn2O4-based (NMO) negative temperature coefficient (NTC) thermistor thick films were fabricated by aerosol-deposition at room temperature. To enhance the thermistor B constant, which represents the temperature sensitivity of the NMO thermistor material, Co and Co-Fe doping was applied. In the case of single element doping of Co, 5 mol% doped NMO showed a high B constant of over 5000 K, while undoped NMO showed ~4000 K. By doping Fe to the 5 mol% Co doped NMO, the B constant was more enhanced at over 5600 K. The aging effect on the NTC characteristics of Co doped and Fe-Co co-doped NMO thick film showed very stable resistivity-time characteristics because of the highly dense microstructure.

AB - Spinel structured highly dense NiMn2O4-based (NMO) negative temperature coefficient (NTC) thermistor thick films were fabricated by aerosol-deposition at room temperature. To enhance the thermistor B constant, which represents the temperature sensitivity of the NMO thermistor material, Co and Co-Fe doping was applied. In the case of single element doping of Co, 5 mol% doped NMO showed a high B constant of over 5000 K, while undoped NMO showed ~4000 K. By doping Fe to the 5 mol% Co doped NMO, the B constant was more enhanced at over 5600 K. The aging effect on the NTC characteristics of Co doped and Fe-Co co-doped NMO thick film showed very stable resistivity-time characteristics because of the highly dense microstructure.

KW - Aerosol-deposition (AD)

KW - Doping

KW - NiMnO

KW - NTC thermistor

KW - Thick film

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U2 - 10.1166/jnn.2013.7232

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JF - Journal of Nanoscience and Nanotechnology

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ER -

Co and Fe doping effect on negative temperature coefficient characteristics of nano-grained NiMn₂O₄ thick films fabricated by aerosol-deposition

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Keywords

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