New negative temperature coefficient thermistor ceramics in Mn-doped CaCu3-xMnxTi4O12 (0≤x≤1) system

Bo Zhang; Qing Zhao; Aimin Chang; Haitao Ye; Shi Chen; Yiquan Wu

doi:10.1016/j.ceramint.2014.03.165

New negative temperature coefficient thermistor ceramics in Mn-doped CaCu_3-xMn_xTi₄O₁₂ (0≤x≤1) system

Bo Zhang
, Qing Zhao
, Aimin Chang^*
, Haitao Ye
, Shi Chen
, Yiquan Wu

^*Corresponding author for this work

Chinese Academy of Sciences, Beijing
Xinjiang Technical Institute of Physics and Chemistry of CAS
Alfred University

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

58 Citations (SciVal)

Abstract

New negative temperature coefficient (NTC) ceramics based on CaCu _3-xMn_xTi₄O₁₂ (0≤x≤1) compositions have been investigated. The grain size of the CaCu _3-xMn_xTi₄O₁₂ samples decreases at first and then increases with increasing Mn content. The X-ray photoelectron spectroscopy analysis corroborates the presence of Mn³⁺ and Mn ⁴⁺ in Mn-doped samples, which results in a decrease in the activation energy. All the NTC thermistors prepared show a linear relationship between the natural logarithm of the resistivity and the reciprocal temperature, indicative of NTC characteristics. The Mn-doped CaCu_3-xMn_xTi ₄O₁₂ NTC thermistors provide various electrical properties, depending on Mn content. The values of ρ₂₅, B constant and activation energy of the NTC thermistors are in the range of 2.22×10⁶-3.22×10⁸ Ω cm, 5488-8031 K, and 0.473-0.692 eV, respectively.

Original language	English
Pages (from-to)	11221-11227
Number of pages	7
Journal	Ceramics International
Volume	40
Issue number	7 Part B
Early online date	4 Apr 2014
DOIs	https://doi.org/10.1016/j.ceramint.2014.03.165
Publication status	Published - Aug 2014

Keywords

C. electrical properties
D. Perovskites
NTC thermistors
CaCu3Ti4O12

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10.1016/j.ceramint.2014.03.165

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title = "New negative temperature coefficient thermistor ceramics in Mn-doped CaCu3-xMnxTi4O12 (0≤x≤1) system",

abstract = "New negative temperature coefficient (NTC) ceramics based on CaCu 3-xMnxTi4O12 (0≤x≤1) compositions have been investigated. The grain size of the CaCu 3-xMnxTi4O12 samples decreases at first and then increases with increasing Mn content. The X-ray photoelectron spectroscopy analysis corroborates the presence of Mn3+ and Mn 4+ in Mn-doped samples, which results in a decrease in the activation energy. All the NTC thermistors prepared show a linear relationship between the natural logarithm of the resistivity and the reciprocal temperature, indicative of NTC characteristics. The Mn-doped CaCu3-xMnxTi 4O12 NTC thermistors provide various electrical properties, depending on Mn content. The values of ρ25, B constant and activation energy of the NTC thermistors are in the range of 2.22×106-3.22×108 Ω cm, 5488-8031 K, and 0.473-0.692 eV, respectively.",

keywords = "C. electrical properties, D. Perovskites, NTC thermistors, CaCu3Ti4O12",

author = "Bo Zhang and Qing Zhao and Aimin Chang and Haitao Ye and Shi Chen and Yiquan Wu",

year = "2014",

month = aug,

doi = "10.1016/j.ceramint.2014.03.165",

language = "English",

volume = "40",

pages = "11221--11227",

journal = "Ceramics International",

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T1 - New negative temperature coefficient thermistor ceramics in Mn-doped CaCu3-xMnxTi4O12 (0≤x≤1) system

AU - Zhang, Bo

AU - Zhao, Qing

AU - Chang, Aimin

AU - Ye, Haitao

AU - Chen, Shi

AU - Wu, Yiquan

PY - 2014/8

Y1 - 2014/8

N2 - New negative temperature coefficient (NTC) ceramics based on CaCu 3-xMnxTi4O12 (0≤x≤1) compositions have been investigated. The grain size of the CaCu 3-xMnxTi4O12 samples decreases at first and then increases with increasing Mn content. The X-ray photoelectron spectroscopy analysis corroborates the presence of Mn3+ and Mn 4+ in Mn-doped samples, which results in a decrease in the activation energy. All the NTC thermistors prepared show a linear relationship between the natural logarithm of the resistivity and the reciprocal temperature, indicative of NTC characteristics. The Mn-doped CaCu3-xMnxTi 4O12 NTC thermistors provide various electrical properties, depending on Mn content. The values of ρ25, B constant and activation energy of the NTC thermistors are in the range of 2.22×106-3.22×108 Ω cm, 5488-8031 K, and 0.473-0.692 eV, respectively.

AB - New negative temperature coefficient (NTC) ceramics based on CaCu 3-xMnxTi4O12 (0≤x≤1) compositions have been investigated. The grain size of the CaCu 3-xMnxTi4O12 samples decreases at first and then increases with increasing Mn content. The X-ray photoelectron spectroscopy analysis corroborates the presence of Mn3+ and Mn 4+ in Mn-doped samples, which results in a decrease in the activation energy. All the NTC thermistors prepared show a linear relationship between the natural logarithm of the resistivity and the reciprocal temperature, indicative of NTC characteristics. The Mn-doped CaCu3-xMnxTi 4O12 NTC thermistors provide various electrical properties, depending on Mn content. The values of ρ25, B constant and activation energy of the NTC thermistors are in the range of 2.22×106-3.22×108 Ω cm, 5488-8031 K, and 0.473-0.692 eV, respectively.

KW - C. electrical properties

KW - D. Perovskites

KW - NTC thermistors

KW - CaCu3Ti4O12

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DO - 10.1016/j.ceramint.2014.03.165

M3 - Article

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SN - 0272-8842

VL - 40

SP - 11221

EP - 11227

JO - Ceramics International

JF - Ceramics International

IS - 7 Part B

ER -

New negative temperature coefficient thermistor ceramics in Mn-doped CaCu_3-xMn_xTi₄O₁₂ (0≤x≤1) system

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Keywords

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