Dielectric relaxation behavior and energy storage properties in Ba1-x(Bi0.5K0.5)xTi0.85Zr0.15O3 ceramics
| Autor: | Yanchun Hu, Xianwei Wang, M.M. Yang, L. Y. Sun, X. W. Wang, Shi Linxin, Bing Zhang |
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| Rok vydání: | 2019 |
| Předmět: |
Phase transition
Materials science Condensed matter physics Mechanical Engineering Doping Metals and Alloys 02 engineering and technology Dielectric Atmospheric temperature range 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Energy storage 0104 chemical sciences Mechanics of Materials visual_art Materials Chemistry visual_art.visual_art_medium Ceramic 0210 nano-technology Polarization (electrochemistry) |
| Zdroj: | Journal of Alloys and Compounds. 789:983-990 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2019.03.126 |
| Popis: | The effects of (Bi0.5K0.5)2+ content on the microstructures, dielectric properties and energy storage properties of Ba1-x(Bi0.5K0.5)xTi0.85Zr0.15O3 (x = 0, 0.02, 0.04, 0.06, 0.08, 0.1; BZTO) ceramics were systematically investigated. The dielectric properties of the doped BZTO (x = 0.02–0.1) ceramics as a function of temperature exhibit a wide peak, indicating a diffuse phase transition in doped BZTO ceramics. The diffuse phase transition leads to the good dielectric stability for doped BZTO (x = 0.02–0.1) ceramics over a wide temperature range (−200 °C–120 °C). Also, the slim polarization electric field (P-E) loops were observed in the x = 0.06 and x = 0.08 samples, showing lower remnant polarization (Pr) than that of pure BZTO ceramic obviously. The x = 0.06 sample exhibits the highest energy storage density of 0.90 J/cm3 together with a high energy storage efficiency of 90.4% at 30 kV/cm. |
| Databáze: | OpenAIRE |
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