Preparation of Fe0.8Mn1.54Ni0.66O4 Nano-Ceramics by Sol-gel auto combustion and N2 Annealing for High Reliable NTC Thermistor-Reference-Cited by-同舟云学术

Preparation of Fe0.8Mn1.54Ni0.66O4 Nano-Ceramics by Sol-gel auto combustion and N2 Annealing for High Reliable NTC Thermistor

Published:2021-01-15 Issue: Volume:7 Page:96-99
ISSN:2313-0555
Container-title:International Journal of Materials
language:en
Short-container-title:

Author:

Yu Nam-Chol¹,Pak IlMan²,Pak SonGuk³

Affiliation:

1. School of Science and Engineering, KimChaek University of Technology, 60-Kyogu, Yonggwang Street, Pyongyang, DPR Korea

2. Institute of Material Analysis, KimChaek University of Technology, 60-Kyogu, Yonggwang Street, Pyongyang, DPR Korea

3. Institute of Semiconductor, KimChaek University of Technology, 60-Kyogu, Yonggwang Street, Pyongyang, DPR Korea

Abstract

Fe0.8Mn1.54Ni0.66O4 nano-ceramics have been successfully prepared by sol-gel auto combustion. The microstructure and phase of these samples was observed by using Scanning Electron Microscopy and X-Ray Diffraction. The diameters of Fe0.8Mn1.54Ni0.66O4 ceramic particles pre-fired at 800℃ range from 52 to 83nm. The powder sintered at above 1050℃ has the compact and uniform spinel structure. We have investigated the electrical characteristics of these thermistors at different sintering temperatures and concluded that the sample sintered at 1200℃ is sufficient to form the appropriate spinel phase. Moreover, the thermistor annealed for 72h at 450~550℃ in N2 atmosphere has the drift value of <0.7%.

Publisher

North Atlantic University Union (NAUN)

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