Funct. Mater. 2021; 28 1: 35-38.

doi:https://doi.org/10.15407/fm28.01.35

Electrical properties of La0.6Sr0.4Co0.8Fe0.2O3-δ ceramic synthesized by solid-state reaction method

Yandong Wang, Xinlong Li

Department of Materials Science and Engineering, Jilin Institute of Chemical Technology, 132022 Jilin, China

Abstract: 

La0.6Sr0.4Co0.8Fe0.2O3-δ ceramics was prepared by means of the solid-state reaction method under the sintering condition of 1100°C for 5 h. The X-ray diffraction and Raman spectroscopy results indicated that the sample possessed a pseudo-cubic structure. The temperature-dependent electrical conductivity was measured by the dc four-electrode technique, and the calculated activation energy was 9.64 kJ/mol based on the Arrhenius relationship. The electrical conductivity relaxation data of the sample under different oxygen partial pressures (0.1-0.2 kPa) were analyzed and the surface emission coefficients at 600°C, 700°C and 800°C were obtained.

Keywords: 
ceramics, solid-state reaction method, electrical properties, XRD, Raman, electrical conductivity relaxation.

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