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http://dx.doi.org/10.6111/JKCGCT.2015.25.5.225

Crystal structure of Mn-Co-Ni thermistor  

Lee, Jung-Il (Department of Materials Science and Engineering, Korea National University of Transportation)
Mhin, Sungwook (Heat Treatment R&D Group, Korea Institute of Industrial Technology)
Ryu, Jeong Ho (Department of Materials Science and Engineering, Korea National University of Transportation)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.25, no.5, 2015 , pp. 225-229 More about this Journal
Abstract
This study was performed to investigate crystal structure of cubic spinel-type monophase oxide composed of the Mn-Co-Ni ternary system. Starting material was prepared by mixing Mn, Co, Ni oxides then evaporation to dryness. The XRD patterns were analyzed by in-situ XRD as increasing temperature from room temperature to $1400^{\circ}C$ in air atmosphere. The cubic spinel phase was existed in a temperature range from $900^{\circ}C$. However, separation of NiO phase was detected from $1300^{\circ}C$, which was the origin of deterioration in the crytallinity. The surface morphology of the manufactured NTC thermistors were analyzed by FE-SEM for comparison of good and bad samples.
Keywords
NTC thermistor; Crystal structure; In-situ XRD;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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