Impact of the A-site rare-earth ions (Ln3+ – Sm3+, Eu3+, Gd3+) on structure and electrical properties of the high entropy LnCr0.2Mn0.2Fe0.2Co0.2Ni0.2O3 perovskites |
| |
| Affiliation: | 1. South Ural State University, 454080, Chelyabinsk, Russia;2. SSPA “Scientific and Practical Materials Research Centre of NAS of Belarus”, 220072, Minsk, Belarus;3. Guangdong University of Technology, Materials and Energy School, Panyu District, Guangzhou, 510006, PR China;4. Xi''an Jiaotong University, Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi''an, 710049, China;5. L.N. Gumilyov Eurasian National University, 2, Satpayev Str., 010000, Nur-Sultan, Kazakhstan |
| |
| Abstract: | High entropy perovskites LnCr0.2Mn0.2Fe0.2Co0.2Ni0.2O3 ceramics were produced by solid-state reactions from oxides. The B-site chemical composition was fixed (Cr0.2Mn0.2Fe0.2Co0.2Ni0.2) and A-site composition was varied by the rare-earth ions (Ln = Sm3+, Eu3+ and Gd3+). The entropy of B-sublattice mixing was 1.609R J/(mol*K). The dependences of the lattice parameters, microstructure features, and electrical properties were discussed as function of the A-site rare-earth ions. The correlation of the lattice parameters with the nature of the A-site rare earth ions was demonstrated. Impact of the rare-earth ions in A-site on microstructural parameters was observed. Charge conduction mechanisms were discussed in details for a wide range of temperatures. |
| |
| Keywords: | Perovskites High entropy oxides Electrical properties Conduction mechanisms Rare-earth elements |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
