Title of article
Oxygen-vacancy-related dielectric relaxations in Na0.5K0.5NbO3
Author/Authors
Wang، نويسنده , , C.C. and Wang، نويسنده , , J. and Sun، نويسنده , , X.H. and Liu، نويسنده , , L.N. and Zhang، نويسنده , , J. and Zheng، نويسنده , , J. and Cheng، نويسنده , , C.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2014
Pages
5
From page
29
To page
33
Abstract
Na0.5K0.5NbO3 ceramic samples were prepared via the solid-state reaction route. The low-frequency (20–107 Hz) dielectric properties were investigated in the temperature range from room temperature to 1073 K. Two relaxations were observed in the spectra of electric modulus. Relaxation 1 occurs in the orthorhombic phase, which was ascribed to be related to the oxygen-vacancy clusters. Relaxation 2 appears in the tetragonal and cubic phases. It behaves as a Maxwell–Wagner-type and polaron-type relaxation in the tetragonal and cubic phase, respectively.
Keywords
A. Ferroelectrics , D. Dielectric response , E. Impedance spectrum
Journal title
Solid State Communications
Serial Year
2014
Journal title
Solid State Communications
Record number
1794634
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