Large single grain (RE)-Ba-Cu-O superconductors with nano-phase inclusions

Author

Babu, N. Hari ; Reddy, E.S. ; Shi, Y. ; Iida, K. ; Withnell, T.D. ; Cardwell, D.A.

Author_Institution

Eng. Dept., Univ. of Cambridge, UK

Volume

15

Issue

2

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

3090

Lastpage

3093

Abstract

Nano-phase (5-20 nm) particles of YBa₂(Cu_0.5M_0.5)O₆ [where M=Nb, Ta, Mo, W, Zr and Hf] have been introduced successfully into RE-Ba-Cu-O single grain superconductors. A study to enlarge the size of a single grain containing these particles has been carried out involving measurement of the growth rate as a function of YBa₂(Cu_0.5M_0.5)O₆ phase concentration and degree of undercooling. The influence of the change in YBa₂(Cu_0.5M_0.5)O₆ concentration on microstructural features is also investigated and the superconducting properties of these large grain superconductors are presented.

Keywords

barium compounds; flux pinning; granular superconductors; high-temperature superconductors; inclusions; nanoparticles; rare earth compounds; 5 to 20 nm; YBa₂(Cu_0.5Hf_0.5)O₆; YBa₂(Cu_0.5Mo_0.5)O₆; YBa₂(Cu_0.5Nb_0.5)O₆; YBa₂(Cu_0.5Ta_0.5)O₆; YBa₂(Cu_0.5W_0.5)O₆; YBa₂(Cu_0.5Zr_0.5)O₆; flux pinning centers; growth rate; large grain superconductors; materials processing; nanoparticles; nanophase inclusions; phase concentration; single grain superconductors; superconducting materials; Flux pinning; Grain size; Hafnium; High temperature superconductors; Microstructure; Powders; Solid state circuits; Superconductivity; Yttrium barium copper oxide; Zirconium; Flux pinning centers; materials processing; nano particles; superconducting materials;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2005.848965

Filename

1440323