Abstract
The electrical properties of high-purity magnesium oxide (MgO) samples sintered between 1500 and 1650°C were investigated up to 800°C. Dielectric constant, loss tangent and electrical conductivity were measured between 25 and 800°C. Optimum electrical properties were obtained for the sample sintered at 1600°C. The impurities in polycrystalline and single crystal MgO were discussed to understand their effect on electrical properties and the role of grain boundaries. Higher dielectric losses of polycrystalline samples as compared to the single crystal MgO were attributed to the presence of grain boundaries. MgO could be a useful dielectric material for capacitor applications up to 600°C.
Recommended Citation
A. Devoe et al., "Dielectric Properties Of Polycrystalline And Single-Crystal Magnesium Oxide At High Temperatures," International Journal of Applied Ceramic Technology, Wiley, Jan 2024.
The definitive version is available at https://doi.org/10.1111/ijac.14728
Department(s)
Materials Science and Engineering
Publication Status
Full Access
Keywords and Phrases
capacitors; conductivity; dielectric; electrical properties; magnesium oxide
International Standard Serial Number (ISSN)
1744-7402; 1546-542X
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Wiley, All rights reserved.
Publication Date
01 Jan 2024
