Effect of Yb2O3 addition on varistor properties and aging characteristics of ZnO–V2O5–Mn3O4 system
| Autor: | Choon-W. Nahm |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Ytterbium Materials science Pellets Analytical chemistry Varistor chemistry.chemical_element Nonlinear coefficient 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Atomic and Molecular Physics and Optics Grain size Electronic Optical and Magnetic Materials Stress (mechanics) chemistry 0103 physical sciences Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 29:2958-2965 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-017-8226-2 |
| Popis: | This paper deals with a major effect of ytterbium on microstructure, electrical and dielectric properties, and aging characteristics of ZVM (ZnO–V2O5–Mn3O4) system. With the amount of the ytterbium increased, the average grain size decreased from 7.2 to 5.9 µm, whereas the density of the sintered pellets increased from 5.39 to 5.55 g/cm3. The breakdown field increased from 922 to 3774 V/cm with the increase of the amount of the ytterbium. The nonlinear coefficient exhibited a maximum value (29.2) at 0.025 mol% and a minimum value (5.7) at 0.25 mol% in the amount of the ytterbium. The sample added with 0.1 mol% Yb2O3 exhibited the highest stability; variation rates for the breakdown field and the nonlinear coefficient were 0.7% and − 4.2%, respectively, after application of a stress of 0.85 EB/85 °C/24 h. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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