Influence of Rare-Earth (Doped) on Low-Density Bi1.6Pb0.4Sr2Ca1.9RE0.1Cu3Oδ (RE=Nd, Er) Superconductors via Co-Precipitation Method
| Autor: | Mohd Mustaqim Rosli, H. Azhan, S. Akmal Syamsyir, M. Robaiah, K. Azman, I.N. Syuhaida, C.M.N. Azura |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Coprecipitation Mechanical Engineering Transition temperature Doping Analytical chemistry Mineralogy Thermal treatment Condensed Matter Physics law.invention Metal Mechanics of Materials law visual_art Phase (matter) Volume fraction visual_art.visual_art_medium General Materials Science Calcination |
| Zdroj: | Materials Science Forum. 846:574-578 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.846.574 |
| Popis: | Effect of Ca doped by rare-earth elements, Nd and Er (x=0.10) on the structural and transport properties of low density Bi1.6Pb0.4Sr2Ca1,9RE0.1Cu3Oδ (RE=Nd,Er) samples have been investigated. The samples have been prepared via co-precipitation (COP) method from precipitate of saturated solutions of metal acetates, iso-propanol solution and oxalic acid. The metal oxalates powder was subjected to thermal treatment of 24 hours calcination at 845oC and mixed with 0.10 g sucrose C12H22O11 which is used as supplementary filler. The pelletized powder was heated for 2 hours at 400 oC and sintered for at 850oC for 48 hours. All samples show a single step transition in the R-T curves. The critical current density (Jc) and transition temperature (Tczero) for both Nd and Er doped with x = 0.10 were found to be lower than standard samples. Tczero obtained varies between 98 K and 66 K. XRD data showed the decrease of volume fraction for the Bi-2223 phase and increase of the volume fraction Bi-2212 phase with the doping of Nd and Er. |
| Databáze: | OpenAIRE |
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