Synthesis of antiferroelectric Bi0.534Na0.50.94Ba0.06TiO3 ceramics with high phase transition temperature and broad temperature range by a solid-state reaction methodReportar como inadecuado




Synthesis of antiferroelectric Bi0.534Na0.50.94Ba0.06TiO3 ceramics with high phase transition temperature and broad temperature range by a solid-state reaction method - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Chinese Science Bulletin

, Volume 58, Issue 23, pp 2893–2897

First Online: 08 July 2013Received: 26 December 2012Accepted: 27 April 2013DOI: 10.1007-s11434-013-5972-2

Cite this article as: Li, X., Xi, Z., Long, W. et al. Chin. Sci. Bull. 2013 58: 2893. doi:10.1007-s11434-013-5972-2

Abstract

Antiferroelectric 0.94Bi0.534Na0.5TiO3-0.06BaTiO3 ceramics were prepared using a solid-state reaction method, involving the addition of excessive amounts of Bi2O3. The resulting ceramics featured a very high phase transition temperature Tm ∼330°C, from the antiferroelectric to the paraelectric phase, and a low depolarization temperature Td < 25°C. The broad temperature range, within which antiferroelectric properties are retained, of the prepared materials indicates their higher potential over lead-based antiferroelectric ceramics such as PZT-based materials that exhibit a lower Tm ⩽ 170°C. The lower Td and higher Tm obtained values, relative to those reported in the literature, are believed to be due to the formation of A-site vacancies originating from the incorporation of excess Bi into the perovskite structure of the studied sample. In addition, the synthesized sample shows a high dielectric constant of ∼1460, in a temperature range of 50–150°C at 1 kHz, and a high energy storage density of 0.71 J-cm, which is an asset in energy storage capacitor applications.

Keywordslead-free ceramics antiferroelectric high Tm dielectric properties energy-storage This article is published with open access at Springerlink.com

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Autor: XiaoJuan Li - ZengZhe Xi - Wei Long - PinYang Fang

Fuente: https://link.springer.com/



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