Magnetic Levitation and Some Mechanism of YBa2Cu3O7-δ Superconductor Doped with Nano-Sized Al2O3
Publish place: The first national conference on electrical engineering of the Young and Elite Researchers Club
Publish Year: 1395
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
BPJCEE01_118
تاریخ نمایه سازی: 6 اسفند 1395
Abstract:
In this study we report magnetic levitation, structural and mechanism analyses on YBa2Cu3O7-δ (noted Y-123) polycrystalline samples superconductor added with nano-sized Al2O3 particles. Magnetic levitation experiment was used to investigate the superconductivity state of the samples. X-ray diffraction (XRD) with the Rietveld refinement technique was carried out to characterize phase identification and lattice structural of samples. XRD results reveal that the lattice parameters change for Y-123 phases. The differentiate of resistivity dρ/dT has been calculated and the effect of addition of nano-sized Al2O3 particles in the critical superconducting temperature Tc has been reported. The calculated densities versus d-spacing for YBCO ceramic samples added with nano-sized alumina particles has been obtained. Superconducting parameters are affected by the nano-sized Al2O3 particles addition, and results are discussed in relevance to the structural and some mechanism of YBa2Cu3O7-δ bulk superconductor.
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Authors
Gholamabbas Shams
Department of Physics, Islamic Azad University, Shiraz Branch, Shiraz, Iran,
Ali Mahmoodinezhad
Department of Physics, Islamic Azad University, Marvdasht Branch, Marvdasht, Iran,
Morteza Ranjbar
Young Researchers and Elite club, Science and Research Branch, Islamic Azad University, Tehran, Iran