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

被引：35
|
作者：
Zhivulin, V. E. [1 ]
Trofimov, E. A. [1 ]
Gudkova, S. A. [1 ]
Punda, A. Yu. [1 ]
Valiulina, A. N. [1 ]
Gavrilyak, A. M. [1 ]
Zaitseva, O. V. [1 ]
Tishkevich, D. I. [1 ,2 ]
Zubar, T. I. [1 ,2 ]
Sun, Zhipeng [3 ]
Zhou, Di [4 ,5 ]
Trukhanov, S. V. [2 ]
Vinnik, D. A. [1 ]
Trukhanov, A. V. [1 ,2 ,6 ]
机构：
[1] South Ural State Univ, Chelyabinsk 454080, Russia
[2] SSPA Sci & Pract Mat Res Ctr NAS Belarus, Minsk 220072, BELARUS
[3] Guangdong Univ Technol, Mat & Energy Sch, Guangzhou 510006, Peoples R China
[4] Xi An Jiao Tong Univ, Elect Mat Res Lab, Key Lab Minist Educ, Xian 710049, Peoples R China
[5] Sch Elect Sci & Engn, Int Ctr Dielectr Res, Xian 710049, Peoples R China
[6] LN Gumilyov Eurasian Natl Univ, 2 Satpayev Str, Nur Sultan 010000, Kazakhstan
来源：
CERAMICS INTERNATIONAL | 2022年 / 48卷 / 07期
基金：
俄罗斯科学基金会;
关键词：
Perovskites; High entropy oxides; Electrical properties; Conduction mechanisms; Rare-earth elements; GIANT MAGNETORESISTANCE; MAGNETIC-PROPERTIES; TRANSITION; CERAMICS; OXIDES;
D O I：
10.1016/j.ceramint.2021.12.110
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
High entropy perovskites LnCr(0.2)Mn(0.2)Fe(0.2)Co(0.2)Ni(0.2)O(3) 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.
引用
收藏
页码：9239 / 9247
页数：9
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