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Structural and electrical properties of La(Sr,Ca)MnO3 ceramics for NTC thermistors

Authors
Kim, Eun-HuiLee, Sam-HaengPark, Byeong-JunLim, Jeong-EunLee, Myung-GyuPark, Joo-SeokKim, Byung-CheulLee, Sung-Gap
Issue Date
Dec-2021
Publisher
KOREAN ASSOC CRYSTAL GROWTH, INC
Keywords
La(Sr,Ca)MnO3; Thermistors; Hopping conduction; Structural properties; Electrical properties
Citation
JOURNAL OF CERAMIC PROCESSING RESEARCH, v.22, no.6, pp.692 - 696
Indexed
SCIE
SCOPUS
KCI
Journal Title
JOURNAL OF CERAMIC PROCESSING RESEARCH
Volume
22
Number
6
Start Page
692
End Page
696
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/2894
DOI
10.36410/jcpr.2021.22.6.692
ISSN
1229-9162
Abstract
La-0.7(Sr0.3-xCax)MnO3 (0.1 <= x <= 0.25) ceramics were prepared using solid-state sintering. XRD measurements showed that all specimens showed rhombohedral polycrystalline structures. As the amount of Ca increased from 0.1 mol to 0.25 mol, sintered densities decreased from 5.8888 g/cm(3) to 5.5829 g/cm(3). All specimens exhibited excellent NTCR properties of approximately 0.445-0.421 %/degrees C. The TCR property, B-25(/65) constant, and resistivity at room temperature of the LSMO specimen doped with 0.2 mol Ca were 0.439 %/degrees C, 469 K, and 3.94 x 10(4) Omega-cm, respectively.
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공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles
융합기술공과대학 > Division of Converged Electronic Engineering > Journal Articles

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Lee, Sung Gap
대학원 (나노신소재융합공학과)
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