Temperature-stable dielectric properties from 100 to 375 °C in system (K0.495Na0.495La0.01)(Nb0.997Cu0.0075)O3–Bi(Mg0.5Zr0.5)O3
| Autor: | Hongliang Du, Peng Gao, Ping Wen, Wancheng Zhou, Hualei Cheng, Jian Xiao, Li-Fang Zhao |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Metals and Alloys Dielectric Atmospheric temperature range Condensed Matter Physics Microstructure law.invention Capacitor law Phase (matter) visual_art Materials Chemistry visual_art.visual_art_medium Orthorhombic crystal system Dielectric loss Ceramic Physical and Theoretical Chemistry Composite material |
| Zdroj: | Rare Metals. 38:1193-1198 |
| ISSN: | 1867-7185 1001-0521 |
| DOI: | 10.1007/s12598-018-1165-0 |
| Popis: | (1−x)(K0.495Na0.495La0.01)(Nb0.997Cu0.0075)O3-xBi(Mg0.5Zr0.5)O3 (abbreviated as KNLNC-xBMZ) ceramics were designed and prepared. The phase transition, microstructure and electrical properties of the ceramics were investigated. The phase structures of the ceramics transform from orthorhombic to pseudocubic phases and the grain sizes decrease gradually with BMZ content (x) increasing. Additionally, BMZ additions can significantly enhance the dielectric temperature stability and decrease the dielectric loss of ceramics over a relatively broad temperature range. KNLNC-0.02BMZ ceramics exhibit high dielectric permittivity (er = 1542) and small variation (Δer/er150 °C ≤ ± 15%) in dielectric permittivity from 100 to 375 °C, and low dielectric loss (tanδ ≤ 2%) in the temperature range of 100–350 °C, which suggests that this ceramic is a candidate for high-temperature capacitor application. |
| Databáze: | OpenAIRE |
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