AFRL-PR-WP-TP-2006-231 ISLAND GROWTH OF Y2BaCuO5 NANOPARTICLES IN (211~1.5 nm/123~10 nm)XN COMPOSITE MULTILAYER STRUCTURES TO ENHANCE FLUX PINNING OF YBa2Cu3O7–δ FILMS

ISLAND GROWTH OF Y2BaCuO5 NANOPARTICLES IN (211~1.5 nm/123~10 nm)XN COMPOSITE MULTILAYER STRUCTURES TO ENHANCE FLUX PINNING OF YBa2Cu3O7–δ FILMS

AFRL-PR-WP-TP-2006-205 ADDITION OF NANOPARTICLE DISPERSIONS TO ENHANCE FLUX PINNING OF THE YBa2Cu3O7–x SUPERCONDUCTOR

Nano-composite single grain YBa2Cu3O7-δ / Y2Ba4CuBiOy bulk superconductors

We have succeeded recently in synthesizing a chemically stable, inert family of materials of composition Y2Ba4CuMOy (Y-2411 where M = Nb, Ta, Mo, W, Zr, Hf) within the superconducting YBa2Cu3O7-δ• (Y-123) phase matrix that forms effective flux pinning centers of nano-scale dimensions. In this paper we report the synthesis of the Y2Ba4CuBiOy phase with nano-scale dimensions that is similarly com...

AFRL - RZ - WP - TP - 2008 - 2231 FLUX PINNING ENHANCEMENT IN YBa 2 Cu 3 O 7 - x FILMS WITH BaSnO 3 NANOPARTICLES ( POSTPRINT )

Nanoparticles of BaSnO3 were incorporated into YBa2Cu3O7−x (YBCO) films on LaAlO3 substrates for magnetic flux pinning enhancements. More than an order of magnitude improvement in the high field magnetization Jc at 6 T at 77 K was observed as compared to regular YBCO films. The irreversibility field (Hirr) was increased to 8.5 T at 77 K and to 13.4 T at 65 K. The in-field transport current meas...

اثر نانو ذرات نقره به عنوان مراکز میخکوبی شار در ابررسانای YBa2cu3o7-δ

  The objective of this work is to investigate the effect of Ag nanoparticles as the flux pinning centers. Ag nanoparticles with different particle sizes from 30 to 1000 nm were prepared through the chemical reduction of AgNO3 in an alcohol solution. Then, samples of YBa2Cu3O7-δ superconductors were doped by 1 and 2 weight percentage of Ag nanoparticles with different sizes. Samples were charac...