Affiliation of Author(s):[1] State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, China; [2] Yangtze Delta Region Institute [Huzhou], University of Electronic Science and Technology of China, Huzhou, 313001, China; [3] School of Materials Science and Engineering, Hainan University, Haikou, 570228, China; [4] School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
Journal:Ceramics International
Key Words:Sintering - Strontium compounds - Semiconductor doping - Costs - Resistors - Lanthanum compounds - Manufacture - Ruthenium compounds
Abstract:The use of ruthenium oxides as a functional material for commercial thick–film resistors is not conducive to further lowering manufacturing costs. In this study, we propose Nb–substituted La0.5Sr0.5CoO3 (La0.5Sr0.5Co1-yNbyO3, LSCNb, y = 0.02–0.08) ceramics as new and low–cost functional materials for thick–film resistors. The conductivity and temperature coefficient of resistance (TCR) of the LSCNb samples sintered at different temperatures displayed similar downward trends with increasing Nb5+ content. A relatively high conductivity of 1670 S/cm and a minimum absolute TCR of ?168 ppm/°C were attained for the sample with y = 0.06 sintered at 1225 °C. Furthermore, zero TCR was achieved for samples within the doping range of 0.05 0.5Sr0.5CoO3 ceramics can be promising candidates for low–cost functional materials of thick–film resistors. ? 2022 Elsevier Ltd and Techna Group S.r.l.
Document Type:Journal article (JA)
Volume:48
Issue:13
Page Number:19174-19179
ISSN No.:02728842
Translation or Not:no