<abstract xmlns="http://www.w3.org/1999/xhtml">

Samples of Bi1.5Pb0.5(Sr1.8−xKx)CaCu2O8+d and Bi1.5Pb0.5Sr1.8CaCu2O8+dKx have been prepared from powders of carbonates and primary oxides using the solid state reaction method and compared in this study. In the first case, potassium (K) is substituted in the strontium (Sr) site. In the second one, K is added. A part of the paper is devoted to discuss the results obtained by X-ray diffraction (XRD) analysis and scanning electron microscope (SEM) observations of (Bi,Pb)2Sr1.8CaCu2O8+d samples doped by potassium to provide additional microstructural information related to the doping method. These analyses are supplemented by resistivity and magnetic measurements. Results show how the rate of doping by potassium affects transport and magnetic properties of Bi(Pb)2212 phase. The critical current density (Jc) is improved using the two methods and it reaches a double value by the addition of K as compared to the undoped sample.
</abstract>

Samples of Bi1.5Pb0.5(Sr1.8−xKx)CaCu2O8+d and Bi1.5Pb0.5Sr1.8CaCu2O8+dKx have been prepared from powders of carbonates and primary oxides using the solid state reaction method and compared in this study. In the first case, potassium (K) is substituted in the strontium (Sr) site. In the second one, K is added. A part of the paper is devoted to discuss the results obtained by X-ray diffraction (XRD) analysis and scanning electron microscope (SEM) observations of (Bi,Pb)2Sr1.8CaCu2O8+d samples doped by potassium to provide additional microstructural information related to the doping method. These analyses are supplemented by resistivity and magnetic measurements. Results show how the rate of doping by potassium affects transport and magnetic properties of Bi(Pb)2212 phase. The critical current density (Jc) is improved using the two methods and it reaches a double value by the addition of K as compared to the undoped sample.

Transport and magnetic properties of Bi(Pb)2212 superconducting ceramics doped by low rate of potassium

Material Sciences and Applications Research Unit, Physics Department

‘E.R. Caianiello’ University of Salerno

National Polytecnic School of Constantine

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Samples of Bi1.5Pb0.5(Sr1.8−xKx)CaCu2O8+d and Bi1.5Pb0.5Sr1.8CaCu2O8+dKx have been prepared from powders of carbonates and primary oxides using the solid state...

Transport and magnetic properties of Bi(Pb)2212 superconducting ceramics doped by low rate of potassium

Pubblicato online: 01 giu 2021

Pagine: 15 - 23

Ricevuto: 22 feb 2021

Accettato: 22 feb 2021

DOI: https://doi.org/10.2478/msp-2021-0005

Parole chiave
ceramics, superconductors, transport properties, magnetic properties

© 2021 K. Belala et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Transport and magnetic properties of Bi(Pb)2212 superconducting ceramics doped by low rate of potassium

Pubblicato online: 01 giu 2021

Pagine: 15 - 23

Ricevuto: 22 feb 2021

Accettato: 22 feb 2021

DOI: https://doi.org/10.2478/msp-2021-0005

Parole chiaveceramics, superconductors, transport properties, magnetic properties

© 2021 K. Belala et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Parole chiave
ceramics, superconductors, transport properties, magnetic properties