The Correlation of Miller Indices with the Conductivity Mechanism of Cu-Based High-Tc Superconductor
| Autor: | Israa Maher, Emad K. Al-Shakarchi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Superconductivity High-temperature superconductivity Materials science Condensed matter physics Plane (geometry) Sintering 02 engineering and technology Conductivity 021001 nanoscience & nanotechnology 01 natural sciences law.invention Tetragonal crystal system Electrical resistivity and conductivity law Phase (matter) 0103 physical sciences 0210 nano-technology |
| Zdroj: | Journal of Modern Physics. :1143-1151 |
| ISSN: | 2153-120X 2153-1196 |
| DOI: | 10.4236/jmp.2017.88075 |
| Popis: | The high temperature superconductor of CuBa2Ca2Cu3O8+δ(Cu-1223) was synthesized experimentally by solid-state reaction. There were many pa-rameters affecting the preparation technique such as oxygen flow, sintering temperature, sintering time, and compacted pressure. The XRD-pattern exhibited a tetragonal phase for both Cu-1223, and Cu-1212. The resistivity measurement was considered the important experiment to show the predominant phase of superconductor if it was a high phase or low phase. The critical temperature (Tc) was about (128 K) for the high phase of Cu-1223, whereas the low phase of (Cu-1212) appeared at (Tc = 64 K). The correlation between the Miller indices and resistivity measurements was a good tool to predicate the expected mechanism of conductivity within the unit cell. It was clear that the arrangement of these planes was aligned in the a-c direction. That should make the motion of the charge to be simpler by a stepping plane toward c-axis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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