Electrical conductivity of Nd and Ce co-doped Gd2Zr2O7 ceramics (original) (raw)

Philosophical Magazine Letters, 2010

Abstract

In this study, (Gd1−xNdx)2(Zr1−xCex)2O7 (0 ≤ x ≤ 0.5) ceramics have been prepared by pressureless sintering at 1973 K to investigate the influence of Nd and Ce co-doping on their electrical conductivity. The electrical conductivity of the ceramics was investigated by impedance spectroscopy measurements from 723 to 1173 K over the frequency range of 20 Hz to 2 MHz in air. The measured values obey the Arrhenius relation. For each composition, the grain conductivity gradually increases with increasing temperature from 723 to 1173 K. At a given temperature, it gradually decreases with increasing neodymium and cerium contents from x = 0 to 0.3; thereafter, the grain conductivity exhibits a slight increase with further increasing neodymium and cerium contents up to x = 0.5.

Xiaoliang Xia hasn't uploaded this paper.

Let Xiaoliang know you want this paper to be uploaded.

Ask for this paper to be uploaded.