Development of HoBCO Coated Conductors by Fluorine-Free MOD/PLD Composite Process

Author

Ohmatsu, K. ; Hahakura, S. ; Hasegawa, K.. ; Ueyama, M.

Author_Institution

Sumitomo Electr. Ind. Ltd., Osaka

Volume

17

Issue

2

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

3363

Lastpage

3366

Abstract

Ho₁Ba₂Cu₃O_x (HoBCO) coated conductors by using a fluorine-free metal organic deposition (MOD)/PLD composite process has been developed. Excellent epitaxial growth of MOD-HoBCO layers on PLD-HoBCO layers were confirmed on buffered metallic Ni-alloy textured substrates. The FWHM of MOD-HoBCO layers were typically 6.5-7 degrees. J_c over 1 MA/cm² at 77 K, 0 T was confirmed when MDO-HoBCO thickness was less than 1 mum. By using continuous reel to reel equipments with coating, heating and firing process, several conductors with HoBCO thickness over 1 mum were obtained. A long length HoBCO coated conductor up to 100 m length was fabricated.

Keywords

MOCVD; MOCVD coatings; barium compounds; heat treatment; high-temperature superconductors; holmium compounds; pulsed laser deposition; superconducting epitaxial layers; Ho₁Ba₂Cu₃O - System; coated conductors; coating; epitaxial growth; firing; fluorine-free metal organic deposition; heating; pulsed laser deposition; temperature 77 K; Buffer layers; Coatings; Conductors; Epitaxial growth; Grain boundaries; Heating; Rough surfaces; Substrates; Superconducting epitaxial layers; Surface roughness; Fluorine free; Ho-123; high- $T_{c}$ superconductor; metal organic deposition; thin film;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2007.898946

Filename

4278234