Investigation of the effect of Al plasma treatment on the superconducting properties of YBa2Cu3O7−δ
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Published:2019-12-01
Issue:2
Volume:1399
Page:022031
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ISSN:1742-6588
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Container-title:Journal of Physics: Conference Series
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language:
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Short-container-title:J. Phys.: Conf. Ser.
Author:
Ushakov A V,Karpov I V,Shaikhadinov A A,Demin V G
Abstract
Abstract
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 T C
decreases. Hysteresis loops show that magnetic irreversibility decreases with increasing Al content. The critical current density J C
obtained using the Bean formula does not follow the same change. Al compensates for a decrease in J C
and an increase in its content near the solubility limit gives a higher J C
than in an undissolved sample.
Subject
General Physics and Astronomy