Flux Pinning Characteristics of Artificial Pinning Centers With Different Dimension

Author

Matsumoto, Kaname ; Mele, Paolo ; Ichinose, Ataru ; Mukaida, Masashi ; Yoshida, Yutaka ; Horii, Shigeru ; Kita, Ryusuke

Author_Institution

Dept. of Mater. Sci. & Eng., Kyushu Inst. of Technol., Kitakyushu, Japan

Volume

19

Issue

3

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

3248

Lastpage

3253

Abstract

The crystal defects of the nano-scale, which are called artificial pinning centers (APCs), were successfully introduced into high-temperature superconductors (HTS) by nanotechnology, in order to strongly pin the quantized vortices. Critical current densities Jc of the HTS films were dramatically improved by APCs whose dimensions were controlled. By this method, the in-field Jc (77 K) of the high-quality, epitaxial films was improved by one order of magnitude or more compared with the values of the past. A current outline of the research is described in this paper.

Keywords

barium compounds; critical current density (superconductivity); flux pinning; grain boundaries; high-temperature superconductors; nanotechnology; pulsed laser deposition; superconducting epitaxial layers; yttrium compounds; YBa₂Cu₃O_7-delta; artificial pinning centers; critical current density; flux pinning characteristics; grain boundaries; high-temperature superconductor epitaxial films; nanoscale crystal defects; nanotechnology; pulsed laser deposition; quantized vortices; temperature 77 K; High-temperature superconductor; nanotechnology; superconducting films; superconducting materials;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2018186

Filename

5153240