Studies on Fabrication of Ag/Tl2Ba2Ca2Cu3O10/CdSe Heterostructures with Electrochemical Technique
P M Shirage, D D Shivagan, S H Pawar
TL;DR
This study successfully fabricated Ag/Tl2Ba2Ca2Cu3O10/CdSe heterostructures using pulse-electrodeposition, optimizing electrochemical parameters, and demonstrated enhanced superconducting properties, especially after laser irradiation.
Contribution
It introduces a novel electrochemical fabrication method for heterostructures with improved superconducting parameters and studies their properties in detail.
Findings
Superconducting transition temperature increased from 116.5 K to 121 K after CdSe deposition and laser irradiation.
Critical current density improved from 2.1 x 10^3 to 3 x 10^3 A/cm² with treatment.
Heterostructures exhibit diffusion-free growth and enhanced electrical properties.
Abstract
Metal/superconductor/semiconductor (Ag/TlBaCaCuO/CdSe) heterostructures have been successfully fabricated using pulse-electrodeposition technique. The electrochemical parameters are optimized and diffusion free growth of CdSe onto Ag/TlBaCaCuO was obtained by employing under-potential deposition and by studying nucleation and growth mechanism during deposition. The heterostructures are characterized by X-ray diffraction (XRD), full-width at half-maximum (FWHM), scanning electron microscopy (SEM) studies and low temperature four probe electrical resistivity measurements. After the deposition of CdSe the critical transition temperature of TlBaCaCuO films was found be increased from 116.5 K with Jc = 2.1 x 103 A/cm2 to 118.7 K with Jc = 2.3 x 103 A/cm2. When the heterostructure was irradiated with red He-Ne laser (2 mW), the Tc was further enhanced to 121 K with Jc = 3 x 103 A/cm2. This…
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Taxonomy
TopicsPhysics of Superconductivity and Magnetism · Chemical and Physical Properties of Materials · nanoparticles nucleation surface interactions