Investigation of structural and electrical changes due to iron-doping on the calcium site of Bi₂Sr₂CaCu₂O_8+δ (Bi-2212) superconductor sedimentation films

Authors

Mel Anthony Duldulao National Institute of Physics, University of the Philippines Diliman
Roland Sarmago National Institute of Physics, University of the Philippines Diliman

Abstract

The effects on the lattice parameters and the critical temperature of Bi-2212 superconducting films upon iron doping on calcium site prepared by sedimentation melt quench has been investigated. The iron content was varied from x=0 to 0.2 on a nominal stoichiometry of Bi₂Sr₂Ca_1-xFe_xCu₂O_8+δ. The samples were characterized by X-ray powder diffraction analysis and resistance vs. temperature measurements using the standard four-point probe technique. It has been found out that at the doping concentration x=0.20, the iron atom can no longer be fully accommodated within the Bi-2212 superconductor system. Even though it doesn’t completely kill the superconductivity of the sample, at x=0.20 iron doping, the iron does lower the transition temperature at which the sample’s resistivity drops to a minimum.

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Issue

2011: Proceedings of the 29th Samahang Pisika ng Pilipinas National Physics Congress

Article ID

SPP2011-PB-25

Section

Poster Session PB

Published

2011-10-24

How to Cite

[1]

MA Duldulao and R Sarmago, Investigation of structural and electrical changes due to iron-doping on the calcium site of Bi2Sr2CaCu2O8+δ (Bi-2212) superconductor sedimentation films, Proceedings of the Samahang Pisika ng Pilipinas 29, SPP2011-PB-25 (2011). URL: https://proceedings.spp-online.org/article/view/SPP2011-PB-25.