Electrical conductivity of LaxSr2?xFe1?yRuyO4±δ |
| |
| Affiliation: | 1. School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand;2. Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand;3. National Metals and Materials Technology Center (MTEC), Thailand Science Park, Pathumthani 12120, Thailand;4. NANOTEC-SUT Center of Excellence on Advanced Functional Nanomaterials, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand;1. Department of Chemical Engineering, University of South Carolina, 301 Main Street, Columbia, SC, 29208, United States;2. Department of Mechanical Engineering, University of South Carolina, 300 Main Street, Columbia, SC, 29208, United States;1. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, China;2. CAS Key Laboratory of Renewable Energy, China;3. Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, China;4. University of Chinese Academy of Sciences, Beijing, 100049, China;5. Nano Science and Technology Institute, University of Science and Technology of China, Suzhou, 215123, China;1. Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China;2. Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB3 0FS, UK;3. Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China;4. School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China;5. Beijing Advanced Innovation Center of Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China;1. Department of Physics, Aligarh Muslim University, Aligarh 202002, India;2. UGC-DAE Consortium for Scientific Research, Indore 452001, India;3. Indus Synchrotrons Utilization Division, Raja Ramanna Center for Advanced Technology, Indore 452013, India |
| |
| Abstract: | Materials of the K2NiF4 structure type have been prepared and the electrical conductivity in air determined for a number of compositions in the LaxSr2?xFe1?yRuyO4±δ solid solution series including three with Ru substituted for Fe on the B site: La0.2Sr1.8Fe0.6Ru0.4O4±δ, La0.4Sr1.6Fe0.7Ru0.3O4±δ, and La0.6Sr1.4Fe0.8Ru0.2O4±δ. Overall the total conductivity values measured were lower than expected for the Ru-doped materials, with a peak conductivity of ≈2 S cm?1 at 700 °C. In the undoped LaxSr2?xFeO4±δ materials, a significant jump in conductivity was observed between the x = 0.7 and 0.8 compositions and was related to the bonding in the materials and the Fe3+/Fe4+ redox behaviour. In all materials, the conduction behaviour was found to follow a semi-conducting trend. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
