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Structural and Electrical Properties of CoxMn3-xO4 Ceramics for Negative Temperature Coefficient Thermistors
- Authors
- Kim, Kyeong-Min; Lee, Sung-Gap; Kwon, Min-Su
- Issue Date
- Dec-2017
- Publisher
- SPRINGER
- Keywords
- Infrared detector; Ni0.79Co0.15-xCuxMn2.06O4; Responsivity; Solid-state reaction method; Thick film
- Citation
- TRANSACTIONS ON ELECTRICAL AND ELECTRONIC MATERIALS, v.18, no.6, pp 330 - 333
- Pages
- 4
- Indexed
- SCOPUS
ESCI
KCI
- Journal Title
- TRANSACTIONS ON ELECTRICAL AND ELECTRONIC MATERIALS
- Volume
- 18
- Number
- 6
- Start Page
- 330
- End Page
- 333
- ISSN
- 1229-7607
2092-7592
- Abstract
- CoxMn3-xO4 (1.48 <= x <= 1.63) ceramics were fabricated using the solid-state reaction method. Structural and electrical properties of specimens based on the composition ratio of Co were observed in order to investigate their applicability in NTC thermistors. All specimens showed a single spinel phase with a homogeneous tetragonal structure. The Co1.57Mn1.43O4 specimen showed a maximum average grain size of approximately 6.47 mu m. In all specimens, TCR properties displayed excellent characteristics of over -4.2%/degrees C. The resistivity at 298 K and B-value of the Co1.57Mn1.43O4 specimen were approximately 418 Omega-cm and 4300, respectively.
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