AC Susceptibility of BaZrO3 Nanoparticles Added YBa2Cu3O7−δ Superconductor Prepared via Coprecipitation Method
| Autor: | Kean Pah Lim, Mohd Mustafa Awang Kechik, Oon Jew Lee, Nurhidayah Mohd Hapipi, Soo Kien Chen, Abdul Halim Shaari, Kar Ban Tan |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Diffraction Superconductivity Materials science Scanning electron microscope Coprecipitation Analytical chemistry Nanoparticle Condensed Matter Physics 01 natural sciences Grain size Electronic Optical and Magnetic Materials 0103 physical sciences Orthorhombic crystal system Crystallite 010306 general physics |
| Zdroj: | Journal of Superconductivity and Novel Magnetism. 32:1191-1198 |
| ISSN: | 1557-1947 1557-1939 |
| DOI: | 10.1007/s10948-018-4829-y |
| Popis: | In this work, magnetic properties of polycrystalline samples YBa2Cu3O7−δ added with x mol.% of BaZrO3 (BZO) nanoparticles (x = 0.0, 1.0, 2.0, 3.0, 5.0, and 7.0) were studied by AC susceptibility (ACS) measurement. The samples were prepared using coprecipitation (COP) method. X-ray diffraction (XRD) results showed that all the samples were composed of Y-123 as the major phase and Y-211 as the secondary phase. XRD peak of BZO was also observed in the samples added with BZO nanoparticles. The intensity of the peak became higher with increasing amount of BZO addition indicating the presence of increased amount of the unreacted nanoparticles in the samples. The refined lattice parameters indicated that all the samples have an orthorhombic crystal structure without the occurrence of orthorhombic-tetragonal phase transformation. Scanning electron microscopy (SEM) images showed that the samples have randomly distributed grains with irregular shape. The average grain size increased from 0.30 μ m for the pure sample to 0.50 μ m for the BZO addition of 7.0 mol.%. ACS measurement showed a slight decrease of onset critical temperature, Tc−onset ( |
| Databáze: | OpenAIRE |
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