Investigation of the effect of Al plasma treatment on the superconducting properties of YBa2Cu3O7−δ

A V Ushakov, I V Karpov, A A Shaikhadinov, V G Demin
2019 Journal of Physics, Conference Series  
The effect of the partial substitution of Cu for Al on the structural, compositional, and magnetic properties of polycrystalline compounds YBa2Cu3O7−δ was studied. All prepared samples turned out to be single-phase with a small fraction of Ba secondary phases. Substitution of more than 2% aluminum causes an increase in spurious phases. DC susceptibility measurements show that the superconducting transition temperature TC decreases. Hysteresis loops show that magnetic irreversibility decreases
more » ... ibility decreases with increasing Al content. The critical current density JC obtained using the Bean formula does not follow the same change. Al compensates for a decrease in JС and an increase in its content near the solubility limit gives a higher JС than in an undissolved sample.
doi:10.1088/1742-6596/1399/2/022031 fatcat:vsnrktgw3zc7zeyazpxtpam5xq