Flux Pinning by Barium Stannate Nanoparticles in MOD YBCO Coated Conductors

Author

Strickland, Nick M. ; Talantsev, Evgeny F. ; Xia, James A. ; Long, Nicholas J. ; Rupich, Martin W. ; Li, Xiaoping ; Zhang, Wei

Author_Institution

Ind. Res. Ltd., Lower Hutt, New Zealand

Volume

19

Issue

3

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

3140

Lastpage

3143

Abstract

Tin-based nanoparticles, proposed to be barium stannate, have been formed in YBCO films fabricated by metal-organic deposition, through modification of the precursor solution. These randomly-oriented 30-50 nm particles are dispersed throughout the film thickness, providing an enhancement in the isotropic flux pinning relative to undoped YBCO. For a low level of nanoparticle addition of 2 vol%, a flux-pinning force enhancement of up to 32% is achieved. We report field and field-angle dependence of the transport critical current, transmission electron microscopy, and X-ray diffraction of our YBCO films on RABiTS substrates, and compare with similar barium zirconate additions.

Keywords

X-ray diffraction; barium compounds; critical currents; flux pinning; high-temperature superconductors; nanoparticles; superconducting thin films; transmission electron microscopy; yttrium compounds; X-ray diffraction; YBCO coated conductors; YBa₂Cu₃O_7-b:BaSnO₃; barium stannate nanoparticles; field-angle dependence; isotropic flux pinning; metal-organic deposition; size 30 nm to 50 nm; transmission electron microscopy; transport critical current; Barium stannate; flux pinning; nanoparticles; superconductivity;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2018735

Filename

5153256