We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Comprehensive and multifaceted conductive mechanisms of Mn doped BaBiO<sub>3</sub>-based ceramic NTC thermistors.
- Authors
Qu, Jing-Jing; Liu, Fei; Yuan, Chang-Lai; Liu, Xiao; Meng, Liu-Fang; Shen, Nai-Rui; Ning, Hui-Wang; Jiang, Wei
- Abstract
The Mn3+-ions doped Ba(MnxBi1−x)O3 (x = 0.0, 0.02, 0.04, 0.06, 0.08 and 0.1) ceramic block samples are prepared by traditional solid-state method. The phase structures of these ceramic systems are analyzed, in which the XRD analysis results show the ceramic systems can be formed the solid solutions as the relatively lower Mn-adding content of x ≤ 0.4, and the ceramic blocks appear the additional diffraction peak belonging to the MnO2 second phase with the increase of x value (≥ 0.6). Combined with the acceptor atom-doping conduction model theory and XPS analysis results, the main conductive forms of these Ba(MnxBi1−x)O3 thermistors include in the following three kinds: the movable holes formed by the acceptor Mn-doping, the 2Bi4+ → Bi3+ + Bi5+ disproportionation reaction, and the [Mn3+/Mn4+] small polaron jump. For the electrical properties test results, the NTC thermal properties for the x = 0.02 and x = 0.06 samples are relatively superior: ρ25 − 690 Ω cm, B25/85 − 3150 K and ρ25 ~ 940 Ω cm, B25/85 − 3080 K, respectively.
- Publication
Journal of Materials Science: Materials in Electronics, 2023, Vol 34, Issue 24, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-023-11121-2