Retraction: Effects of Li-doping on microstructural and electrical properties of ZnO–MgO–Al<sub>2</sub>O<sub>3</sub> linear resistance ceramics
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Post-publication record
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Abstract
In this article, The ZnO-MgO-Al2O3 linear resistance ceramics doped with Li2O have been prepared by the conventional ceramic method. The microstructure and the crystal characteristics were investigated by field emission scanning electron microscopy (FESEM) equipped with energy dispersive spectrometer (EDS) and X-ray diffraction (XRD) respectively. With the increasing of Li2O content, the grain growth of ZnO-based linear resistance ceramics was enhanced and the resistivity was also influenced significantly. The experimental result indicates that the doping of Li2O can reduces the nonlinear coefficient and improves the resistance temperature coefficient of the ZnO-based linear resistance ceramics obviously. The samples at the Li2O content of 8 mol% exhibit excellent electrical properties with the resistivity of 589.34 Ω cm and the resistance temperature coefficient of 0.8 *10-4/ oC. Moreover, the nonlinear coefficient of the ZnO-based linear resistance ceramics decreases from 1.28 to 1.14 as the Li2O concen...
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The record
- Venue
- Canadian Journal of Chemistry
- Topic
- Advanced ceramic materials synthesis
- Field
- Materials Science
- Canadian institutions
- —
- Funders
- —
- Keywords
- CeramicMicrostructureElectrical resistivity and conductivityTemperature coefficientDopingAnalytical Chemistry (journal)Scanning electron microscopeMaterials scienceDiffractionActivation energyMineralogyChemistryComposite materialOpticsPhysical chemistryOptoelectronicsElectrical engineering
- Has abstract in OpenAlex
- yes