Design and synthesis of thermistor materials with high aging stability: Multicomponent equiatomic Mn-Co-Ni-Al-Zn-O ceramics

被引：15
|
作者：
Fan, Liangchen [1 ]
Yao, Jincheng [1 ]
Huo, Peng [1 ,2 ]
Wang, Bing [1 ,2 ]
Liu, Zunjing [1 ,2 ]
Zhao, Pengjun [1 ]
Chang, Aimin [1 ]
Wang, Junhua [1 ]
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, 40-1 South Beijing Rd, Urumqi, Peoples R China
[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
来源：
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2023年 / 155卷
基金：
中国国家自然科学基金;
关键词：
NTC thermistors; Electrical properties; Microstructure; Aging performance; ELECTRICAL-PROPERTIES; MAGNETIC-PROPERTIES; CRYSTAL-STRUCTURE; ENTROPY STATE; MANGANITE; EVOLUTION; OXIDATION;
D O I：
10.1016/j.mssp.2022.107263
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
High entropy oxide (HEO) is a new class of ceramic materials. It is well known for its unique microstructure and remarkable property. In this work, a multicomponent equiatomic Mn-Co-Ni-Al-Zn-O oxide was synthesized using a solid-state reaction route based on entropic engineering. The phase composition of the samples was investigated, which showed the formation of two main phases: Fm 3 m for the rock salt phase and Fd 3 m for the spinel phase. In addition, the electrical behavior of Mn-Co-Ni-Al-Zn-O ceramic was investigated. The 5-cation ceramic exhibits extremely high aging stability with a resistance drift of 0.27% under accelerated aging con-ditions at 125 degrees C for 500 h. In contrast, the aging drift rate of the 4-cation samples is at approximately 2%. It was found that the design of multicomponent equiatomic oxide brings a significant benefit to the aging stability of the material. Thus, it provides an opportunity to improve the aging stability.
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页数：8
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