Abstract
A series of negative temperature coefficient (NTC) thermistor ceramics based on the 0.67Mn1.8ZnCo0.6Fe0.6O4–0.33La1 − xSrxMnO3 (0.2 ≤ x ≤ 0.8) system was prepared using the conventional solid-state method at 1350 °C. X-ray diffraction analysis indicated that the composition ceramics mainly consisted of the perovskite phase and the spinel phase. The composites had high density, and the grain size increased with the increase of Sr2+ content. The resistivity of the composites significantly decreased with the increase of Sr2+ ions. The resistivity, activation energy, and B value of the composites were in the range of 41.42–2800.80 Ω·cm, 0.2247–0.4221 eV, and 2608–4898 K, respectively. After aging at 125 °C for 1000 h, the resistance drift was less than 2.5%, indicating good stability. The ceramic materials with a high B value and low resistance value were prepared and the measuring temperature range of the composition ceramic is from – 75 to 100 °C, which has potential applications in the monitoring industry.
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We acknowledge the financial support of the Western Light Program of the Chinese Academy of Sciences (Grant numbers: XBZG-ZDSYS-202116).
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QQ: Conceptualization (equal); Data curation (lead); Formal (lead); Methodologyanalysis (lead); Investigation(equal); Visualization (equal); Writing-original draft (lead). JX: Data curation (equal); Funding acquisition (supporting); Methodology (equal). YL: Conceptualization (supporting); Formal analysis (equal); Funding acquisition (supporting); Investigation (supporting). HJ: Formal analysis (supporting); Methodology (supporting). PZ: Formal analysis (supporting); Investigation (supporting); Methodology (supporting). YP: Formal analysis (equal);Methodology (supporting); Software (lead); Visualization (lead). AC: Project administration (equal); Resources (supporting);Validation (equal). HZ: Conceptualization (lead); Data curation(supporting); Formal analysis (equal); Funding acquisition (lead); Investigation (equal); Supervision (lead); Writing-review and editing(equal).
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Qin, Q., Xie, J., Li, Y. et al. Exploring ion migration and aging stability in Mn1.8ZnCo0.6Fe0.6O4 and La1 − xSrxMnO3 composite ceramics for NTC thermistor application. J Mater Sci: Mater Electron 34, 1206 (2023). https://doi.org/10.1007/s10854-023-10539-y
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DOI: https://doi.org/10.1007/s10854-023-10539-y