Liangchen Fan, Jincheng Yao, Yuling Tuo, Aimin Chang, Zhaoyang Chen, Junhua Wang
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Aging properties of spinel-type high-entropy oxides (Co.2Cr.2Fe.2Mn.2Zn.2)3O4 for thermistors
Herein, a spinel-type high-entropy ceramics (Co.2Cr.2Fe.2Mn.2Zn.2)3O4 is introduced. The obtained ceramics exhibit superior thermal stability under accelerated aging conditions at 125°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.
期刊介绍：
The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas:
Nanotechnology applications;
Ceramic Armor;
Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors);
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Functional Materials;
Thermal and Environmental Barrier Coatings;
Bioceramic Applications;
Green Manufacturing;
Ceramic Processing;
Glass Technology;
Fiber optics;
Ceramics in Environmental Applications;
Ceramics in Electronic, Photonic and Magnetic Applications;
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