Influence of preforming pressure on the morphology and properties of single-grain Y–Ba–Cu–O superconductors by the 011-type infiltration growth technique

This article experimentally investigates the impact of silver (Ag) nano-particles inclusion and high pelletized pressure on the structural, morphological, and electrical properties of Cu0.5Tl0.5Ba2Ca2Cu3O10-δ (noted CuTl-1223) bulk system. The nano-(Ag)x/CuTl-1223 composites were synthesized using a two-step solid-state reaction process with added amount of Ag nano-particles ranging from 0 to 2.0 wt. % of the total mass. These nano-composites were produced at both low and high pelletize pressure of 0.202 GPa. All prepared samples were characterized using valuable techniques such as X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Energy Dispersive Spectroscopy (EDS), Fourier Transform Infrared Spectroscopy (FTIR), and dc-resistivity measurement at low as well as high pelletized pressure, respectively. The structural investigation via the XRD technique indicated that Ag NPs did not affect the CuTl-1223 tetragonal structure, confirmed that Ag nano-particles were settled across the grain boundaries. SEM examination revealed a fine distribution of nano-sized silver (Ag) NPs among the CuTl-1223 grains, as well as improved weak-links and density of void/pores. The position of distinct vibrational oxygen modes in FTIR spectra showed no substantial alteration, indicating that the structure nature of the host CuTl-1223 phase was preserved. The electrical properties were studied using the four-point probe technique, and the activation energy were determined using Arrhenius law. The results of (ρ-T) measurements showed that pelletization pressure of 0.202 GPa have an impact on the critical temperature (T_c ) of (Ag)x/CuTl-1223 composites. The superconducting critical temperature T_c (0) was enhanced from 99 K to 107 K at high-pressure of pelletization (0.202 GPa) as compared to low pressure, with x = 0 ~ 2.0 wt. % nano-particles addition to the host CuTl-1223 phase.

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The Effect of the Pre-Infiltration Temperature on the Liquid-Phase Infiltration Characteristics and the Magnetic Properties of Single-Domain GdBCO Bulk Superconductors

Wu,

Yang,

Chen

2024

Crystals

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In this study, the effect of the pre-infiltration temperature (Ti) on the liquid-phase infiltration characteristics and its effect on the magnetic properties of single-domain GdBCO bulks prepared by the top-seeded infiltration growth (TSIG) method are comprehensively investigated. The results reveal that (1) the liquid Ba-Cu-O phase (LP) did not uniformly infiltrate into the Gd2BaCuO5 (Gd-211) solid-phase pellet (SPP). (2) The initial melting and infiltration of the LP occurred at approximately 920 °C. The average infiltration depth and amount of LP that infiltrated the SPP increased with increasing Ti accompanied by the shrinkage and depletion of the LP pellet. (3) The LP penetrated up to the top surface of the SPP and uniformly infiltrated throughout the SPP when the Ti was approximately 960 °C and 1020 °C, respectively. (4) The mean Gd-211 particle size of the pre-infiltrated SPP increased from 1.94 µm at 920 °C to 2.52 µm at 1040 °C as the Ti rose. (5) The magnetic properties and microstructure of the single-domain GdBCO bulks were significantly influenced by the microstructure of the pre-infiltrated SPP. The largest levitation force of 35.64 N and trapped field of 0.23 T were obtained in the single-domain GdBCO bulks at an infiltration Ti of 960 °C.

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Influence of preforming pressure on the morphology and properties of single-grain Y–Ba–Cu–O superconductors by the 011-type infiltration growth technique

Cited by 4 publications

References 15 publications

Mapping spatial superconducting property variations in IG-processed bulk ternary (Gd0.33Y0.13Er0.53)Ba2Cu3Oy

Mapping spatial superconducting property variations in IG-processed bulk ternary (Gd0.33Y0.13Er0.53)Ba2Cu3Oy

Comparative investigation of low and high pelletize pressure for (Ag)_x/CuTl-1223 nanoparticles-superconductor composites

The Effect of the Pre-Infiltration Temperature on the Liquid-Phase Infiltration Characteristics and the Magnetic Properties of Single-Domain GdBCO Bulk Superconductors

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Influence of preforming pressure on the morphology and properties of single-grain Y–Ba–Cu–O superconductors by the 011-type infiltration growth technique

Cited by 4 publications

References 15 publications

Mapping spatial superconducting property variations in IG-processed bulk ternary (Gd0.33Y0.13Er0.53)Ba2Cu3Oy

Mapping spatial superconducting property variations in IG-processed bulk ternary (Gd0.33Y0.13Er0.53)Ba2Cu3Oy

Comparative investigation of low and high pelletize pressure for (Ag)x/CuTl-1223 nanoparticles-superconductor composites

The Effect of the Pre-Infiltration Temperature on the Liquid-Phase Infiltration Characteristics and the Magnetic Properties of Single-Domain GdBCO Bulk Superconductors

Contact Info

Product

Resources

About

Comparative investigation of low and high pelletize pressure for (Ag)_x/CuTl-1223 nanoparticles-superconductor composites