Pb, Bi, and rare earth free X6R barium titanate–sodium niobate ceramics for high voltage capacitor applications

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FAN, Yongbo, WANG, Xinzhen, LI, Hongtian, FETEIRA, Antonio, WANG, Dawei, WANG, Ge, SINCLAIR, Derek C. and REANEY, Ian M. (2023). Pb, Bi, and rare earth free X6R barium titanate–sodium niobate ceramics for high voltage capacitor applications. Applied Physics Letters, 122 (14): 143901. [Article]

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31804:616730

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31804:616730

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Abstract

0.9Ba(Ti1xMgx)O3x-0.1NaNbO3 (BTNN-100xMg) solid solutions are investigated with a view to developing Bi, Pb, and rare earth free, high voltage multilayer ceramic capacitors. Mg doping on the B-site significantly reduced the electronic conductivity and resulted in ceramics that could withstand a pulsed unipolar field of >300 kV/cm (Emax) to give a recoverable energy density of 3.4 J/cm3 at 82.6% efficiency for x ¼ 0.01. The high Emax is accompanied by a high dielectric permittivity (e0 1700 at room temperature) with temperature-stable dielectric permittivity of De/e298K � 615% and loss tangent tan d < 0.02 from 116 to 378 K, corresponding to an X6R designation in the Electronic Industry Alliance codes

More Information

Official URL:

https://pubs.aip.org/aip/apl/article/122/14/143901...

Open Access URL:

https://watermark.silverchair.com/143901_1_5.01422...

Open Access Version:

Published version

Uncontrolled Keywords:

02 Physical Sciences; 09 Engineering; 10 Technology; Applied Physics; 40 Engineering; 51 Physical sciences

Identifiers

Identification Number:

10.1063/5.0142200