[Kovove materialy - Metallic materials]
    Sat - November 02, 2024 - 16:05 No. of hits : 1795557 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 54 (2016), Issue 2

Synthesis and characterization of CeO2-doped ZnO
COLAK, H.
vol. 54 (2016), no. 2, pp. 107 - 112
DOI: 10.4149/km_2016_2_107

Abstract
This paper reports the synthesis, crystal structure and electrical properties of CeO2-doped ZnO powders. X-ray diffraction shows that majority of the samples are monophase and have the cubic structure. The solubility limit of Ce4+ ions in ZnO lattice was found to be 3 mol% (after heating at 1000 °C), whereby the impurity phase was determined to be the cubic-CeO2. For monophase CeO2-doped ZnO samples synthesized at 1000 °C, the lattice parameters a and c increased with increasing CeO2 concentration. The electrical conductivity of undoped ZnO and all monophase samples was measured using the four-probe method. The electrical conductivity was increased with both temperature and CeO2 doping. Also, the activation energy of all the monophase samples was calculated. Type of the activation energy of all the monophase samples is thermal. The values were found to be in the range from 0.458 to 0.302 eV for the low-temperature region and from 0.989 to 1.132 eV for the high-temperature region.

Key words
zinc oxide, doping zinc oxide, electrical conductivity, solid state method

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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