Low-loss and temperature-stable negative permittivity in La0.5Sr0.5MnO3 ceramics |
| |
| Affiliation: | 1. College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China;2. Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, China;3. Department of Materials Science and Engineering, National University of Singapore, 117574, Singapore;1. Shenzhen Research Institute of Shandong University, 19 Gaoxin South Four Road, Shenzhen, 518057, China;2. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, 17923 Jingshi Road, Jinan, 250061, China;3. Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, 450002, China;4. College of Materials Science and Engineering, Changsha University of Science and Technology, Changsha, 410114, China;5. Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN, 37996, USA;6. School of Materials Science and Engineering, North University of China, Taiyuan, 030051, China;7. School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;1. Department of Physics, Kalyani Mahavidyalaya, Kalyani, Nadia, West Bengal 741235, India;2. Department of Physics, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan, Republic of China;3. Department of CMP and MS, Tata Institute of Fundamental Research, Colaba, Mumbai 400005, India;4. Solid State Physics Department, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India;5. Applied Physics Department, Indian Institute of Technology (Banaras Hindu University), Varanasi 221 005, India;1. Laboratoire de Physico–Chimie des Matériaux, Département de Physique, Faculté des Sciences de Monastir, Université de Monastir, 5019 Monastir, Tunisia;2. Laboratoire des Matériaux et du Génie Physique (CNRS UMR 5628), Minatec Bâtiment INPG, parvis Louis Néel, BP 257, 38016 Grenoble Cedex 1, France |
| |
| Abstract: | Materials with negative permittivity need to be used at different temperatures, while the negative permittivity behavior affected by large fluctuations in temperature has seldom been studied. In this work, La0.5Sr0.5MnO3 ceramics were prepared by a sol-gel auto-combustion method and subsequent sintering. The negative permittivity behavior, electrical conductivity and reactance of La0.5Sr0.5MnO3 ceramics were systematically studied at various temperatures. The fluctuation in negative permittivity is less than 2.6 % and the dielectric loss (tanδ) is less than 0.2 in the temperature range of 50–600 °C. Based on the key governing properties being achieved, the present work experimentally demonstrates that La0.5Sr0.5MnO3 ceramics, as single-phase oxides, can be used as a feasible alternative metamaterial in a wide temperature range. |
| |
| Keywords: | Negative permittivity Temperature stability Low loss Conductivity |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
