Crystal structure, cation distribution and electrical properties in NixAlyMn3-x-yO4 (0 < x < 0.6; 0 < y < 0.3) spinel-based NTC chip thermistors

被引：2

作者：

Shao, Gang-Qin ^{[1
]}

Cen, Quan-Jin ^{[2
]}

Chen, Zhi-Hua ^{[2
]}

Zhang, Ji-Wei ^{[1
]}

Xie, Meng-Xiang ^{[1
]}

Li, Qiang ^{[2
]}

Cao, Xiu-Hua ^{[2
]}

Wang, Wen-Hao ^{[1
]}

Wang, Yan-Pei ^{[1
]}

Wu, Hou-Ran ^{[1
,2
]}

Hu, Chun-Yuan ^{[2
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, 122 Luoshi Rd, Wuhan 430070, Hubei, Peoples R China

[2] Guangdong Fenghua Adv Technol Holding Co Ltd, State Key Lab Adv Mat & Elect Components, 18 Fenghua Rd, Zhaoqing City 526020, Guangdong, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2024年 / 50卷 / 12期

关键词：

Negative temperature coefficient; Chip thermistor; Spinel; Nickel-aluminum-manganite; Cation distribution; RAY PHOTOELECTRON-SPECTROSCOPY; OXYGEN EVOLUTION; INFRARED-SPECTRA; SINGLE-CRYSTAL; NICKEL METAL; OXIDES; VALENCIES; XPS; NI; CONDUCTIVITY;

D O I：

10.1016/j.ceramint.2024.03.222

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

NixAlyMn3-x-yO4 (0 < x < 0.6; 0 < y < 0.3) series NTC chip thermistors with homogeneous chemical compositions and high-pure spinel phases were fabricated via a tape casting-lamination-sintering process. The multi-variate cation distribution model was established as (Mn1-x+y2+Nix-v2+)[(Mn2-2v-y3+Mnv4)+Ni-v(2)+Al-y(3+)]O-4 (0 < v < 0.5). The conduction mechanism was proposed based on a nearest neighbor hopping (NNH) model. They were verified coherently by cation-oxyanion chemical compositions (XRF/EDS), valence states (XPS), phase structures and Rietveld refinements (XRD), IR vibrations and electrical analyses. The obtained NTC chips were well suitable for commercial applications with a high reliability and with regulable rho(25) (4080 +/- 135 similar to 15,760 +/- 526 Omega cm) and B-25/50 (4016 +/- 20 similar to 4251 +/- 13 K).

引用

页码：21130 / 21143

页数：14

共 81 条

[1] CHEMICAL CHARACTERIZATION OF TRANSITION-METAL SPINEL-TYPE OXIDES BY INFRARED-SPECTROSCOPY [J].