Impact of Nano-Sized Diluted Magnetic Semiconductors Addition on (Cu,Tl)1234 Superconducting Phase
| Autor: | Ghada A. El-Shorbagy, M. Anas |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Superconductivity
Materials science Scanning electron microscope Analytical chemistry Magnetic semiconductor Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics 010305 fluids & plasmas Magnetization Electrical resistivity and conductivity Phase (matter) 0103 physical sciences General Materials Science 010306 general physics Powder diffraction Ambient pressure |
| Zdroj: | Journal of Low Temperature Physics. 194:183-196 |
| ISSN: | 1573-7357 0022-2291 |
| Popis: | The effect of Zn0.95Ni0.05O nanoparticles addition on the superconducting properties of (Cu0.25Tl0.75)Ba2Ca3Cu4O12−δ superconducting phase was studied. Superconducting samples of type (Zn0.95Ni0.05O)x(Cu0.25Tl0.75)Ba2Ca3Cu4O12−δ, x = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0 wt%, were prepared via a single step of solid-state reaction technique at 850 °C under ambient pressure. X-ray powder diffraction, scanning electron microscope, and energy dispersive X-ray were used for samples characterization. The superconducting properties were investigated using the electrical resistivity and DC magnetization measurements. The results showed that the addition of nano-Zn0.95Ni0.05O up to x = 0.6 wt% enhanced the phase formation and improved the superconducting transition temperature Tc in contrary for x > 0.6 wt%, Tc was decreased as x increased. Low field magnetization measurement, H = 20 Gauss, was conducted to the samples to determine the magnetic superconducting transition temperature Tc-mag. Both Tc and Tc-mag were found to have the same behavior with increasing x, whereas the values of Tc-mag were slightly lower than that for Tc values. |
| Databáze: | OpenAIRE |
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