bao - na20 - nb2o5 - p2o5微晶玻璃的结构、介电和储能性能

A. Ihyadn, A. Lahmar, I. Luk’yanchuk, D. Mezzane, L. Bih, A. Alimoussa, M. Amjoud, M. El Marssi
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引用次数: 0

摘要

采用控制晶化方法制备了一系列(1−x)[(2BaO-0·5Na2O) -1P2O5] -xNb2O5 (BNPN, x=0·41,0·43,0·45,0·48)基于磷酸盐玻璃的微晶玻璃。系统地研究了其结构、介电性能、界面极化和储能性能。x射线衍射结果表明,同时存在Ba2NaNb5O15钨青铜结构(TTB)和NaNbO3钙钛矿。在25-200°C的温度范围内具有稳定的介电常数,介电损耗小于0.03,在室温下具有良好的频率稳定性。铌含量的降低促进了TTB的结晶,提高了体系的高介电性能。得到了在1000℃下结晶BNP41的最佳介电常数和可恢复储能密度。复阻抗分析表明,铌含量和结晶温度对界面极化有影响。
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Structural, dielectric and energy storage properties of BaO–Na2O–Nb2O5–P2O5 glass-ceramics
A series of (1−x)[(2BaO–0·5Na2O)–1P2O5] –xNb2O5 (BNPN, x=0·41, 0·43, 0·45, 0·48) glass-ceramics based on phosphate glasses have been prepared via a controlled-crystallisation route. The structure, dielectric properties, interfacial polarisation and energy storage properties were systematically investigated. The x-ray diffraction results showed the simultaneous presence of Ba2NaNb5O15 tungsten bronze structure (TTB) and the NaNbO3 perovskite. A stable dielectric constant over a temperature range from 25–200°C, low dielectric losses less than 0·03 and excellent frequency stability at room temperature were obtained. The decrease of niobium content promoted the TTB crystallisation with improvement of the high dielectric properties of the system. The optimum of the dielectric constant and recoverable energy storage density were obtained for BNP41 crystallised at 1000°C. Analyses of the complex impedance indicated that the niobium content and crystallisation temperature affect the interfacial polarisation.
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来源期刊
CiteScore
0.70
自引率
33.30%
发文量
0
审稿时长
1 months
期刊介绍: Physics and Chemistry of Glasses accepts papers of a more purely scientific interest concerned with glasses and their structure or properties. Thus the subject of a paper will normally determine the journal in which it will be published.
期刊最新文献
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