Aging properties of spinel-type high-entropy oxides (Co.2Cr.2Fe.2Mn.2Zn.2)3O4 for thermistors

被引：0

作者：

Fan, Liangchen ^{[1
,2
]}

Yao, Jincheng ^{[1
]}

Tuo, Yuling ^{[1
]}

Chang, Aimin ^{[1
,3
]}

Chen, Zhaoyang ^{[1
]}

Wang, Junhua ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Xinjiang Key Lab Elect Informat Mat & Devices, Xinjiang Tech Inst Phys & Chem, Urumqi, Peoples R China

[2] Xinjiang Univ, Sch Phys Sci & Technol, Urumqi, Peoples R China

[3] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing, Peoples R China

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2024年 / 21卷 / 06期

关键词：

aging performance; electrical properties; high-entropy oxides; P-V-L bond theory; TEMPERATURE; EVOLUTION; BOND;

D O I：

10.1111/ijac.14866

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：

Herein, a spinel-type high-entropy ceramics (Co.2Cr.2Fe.2Mn.2Zn.2)(3)O-4 is introduced. The obtained ceramics exhibit superior thermal stability under accelerated aging conditions at 125 degrees C for 500 h, that is, aging drift was less than .35% for all samples sintered at temperatures (1200or-1275or . The variation of resistance is mainly attributed to the oxidation of grain boundaries and the migration of oxygen vacancies. The relationship between crystal structure evolution and aging properties was investigated using structural analysis and P-V-L bonding theory. Theoretically, the Co/Cr/Mn/Fe-O bonds at the octahedral sites in the spinel structure are more important for controlling structural stability.

引用

页码：3990 / 4000

页数：11

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