Structural and Transport Properties of the [Formula Omitted] Superconductor

The effects of Lu-doping on phase evolution, microstructure, electrical, and superconducting properties of Bi-2212 have been studied. The results show that [Formula Omitted] ions enter into the crystal structure in place of [Formula Omitted] ions and, hence, reduce the hole concentration in the elec...

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Published inIEEE transactions on applied superconductivity Vol. 20; no. 2; p. 61
Main Authors Sarun, Pallian Murikkoli, Vinu, Surendran, Shabna, Razia, Anooja, Jayakumari Babu, Aswathy, Pillai Mohan, Syamaprasad, Upendran
Format Journal Article
LanguageEnglish
Published New York The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 01.04.2010
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Summary:The effects of Lu-doping on phase evolution, microstructure, electrical, and superconducting properties of Bi-2212 have been studied. The results show that [Formula Omitted] ions enter into the crystal structure in place of [Formula Omitted] ions and, hence, reduce the hole concentration in the electronic structure of the system. Lu-doping results in the reduction of [Formula Omitted]-axis length and increases the Josephson coupling between the [Formula Omitted] layers at lower Lu-contents. The critical temperature [Formula Omitted] and the critical current density [Formula Omitted] are significantly enhanced for optimum Lu concentration. The variations in the electrical and superconducting properties are due to the structural and electronic inhomogeneities and changes in charge carrier concentration due to Lu-doping in the (Bi, Pb)-2212 superconductor.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2009.2039793