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Effect of Lanthanum Substitution on Structure and Modulation in Bi2Sr2-xLaxCaCu2O8+d (0≤x≤0.3) Superconducting Compound

Year: 2021

Type: article

Abstract: The effect of La substitution on the structure and its modulation in samples with a nominal composition of Bi2Sr2-xLaxCaCu2O8+d where 0≤x≤0.3 superconducting phase was investigated. The X-ray powder diffraction (XRPD) results showed an almost pure Bi-2212 phase, confirmed by the estimated amount of element concentration using dispersive energy X-ray spectroscopy (EDX). Scanning electron microscopy (SEM) micrographs showed a decrease of both crystallite size and connectivity when Lanthanum concentration increases. Le Bail refinement using the Jana2006 program gives a very good value of goodness of fit (GOF) factor. Also, the refinement reveals that for x=0.3 the orthorhombic cell transforms to the tetragonal one and the modulation vector q increases when increasing La concentration.

Source: Defect and diffusion forum/Diffusion and defect data, solid state data. Part A, Defect and diffusion forum

DOI: 10.4028/www.scientific.net/ddf.406.240

Authors: Mourad Mimouni, Mohammed Sadok Mahboub, Mohammed Fayçal Mosbah, Ghani Rihia, Soria Zeroual, Mebrouk Ghougali, Azzeddine Beggas

Institutions: University of Eloued, University Frères Mentouri Constantine 1

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

OpenAlex ID: W3118815398

FWCI: 0.105

Cites: 31

Cited by: 1

Related to: 10