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HomeMaterials Science ForumMaterials Science Forum Vol. 898Dielectric and Conduction Properties of Lu3NbO7...

Dielectric and Conduction Properties of Lu₃NbO₇ Transparent Ceramic

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Abstract:

The dielectric response and electrical conduction of Lu₃NbO₇ transparent ceramic produced by spark plasma sintering were investigated. Lu₃NbO₇ transparent ceramic exhibited low frequency dielectric dispersion and a peak in dielectric loss, shifting to higher frequency at high temperatures. This indicated space charge polarization and broad relaxation time, confirmed by impedance and modulus spectra. The Nyquist plot shows the dominant grain effect in the electrical conduction. The AC conductivity of Lu₃NbO₇ transparent ceramic is 4.18×10^-2 S m^-1 at 1073 K, with an activation energy of 1.30 eV.

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Periodical:

Materials Science Forum (Volume 898)

Pages:

1681-1685

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.898.1681

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Online since:

June 2017

Authors:

Li Qiong An*, D.S. Wang, Run Hua Fan, Li Hua Dong

Keywords:

Conductivity, Dielectric Property, Lu₃NbO₇, Transparent Ceramic

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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