High field performance of PbMo6S8superconductors

Author

Hamasaki, Kazuki ; Watanabe, K. ; Saito, L. ; Yamashita, T. ; Komata, T. ; Noto, K.

Author_Institution

Technological University of Nagaoka, Nagaoka, Japan

Volume

23

Issue

2

fYear

1987

fDate

3/1/1987 12:00:00 AM

Firstpage

1019

Lastpage

1021

Abstract

Critical currents in Chevrel-phase lead molybdenum sulphide have been measured at two temperatures as a function of applied magnetic field up to 30 T. Improved critical current densities Jc\´s were achieved with electroplating and diffusion processed PbMo6S8short-tapes. Increased Jcvalues were obtained for a short heat-treatment at 1050 °C. We find a Jcof $\\sim 5\\times10^{3}$ A/cm²at 20 T and 4.2 K, and $\\sim1\\times10^{4}$ A/cm²at 20 T and 1.6 K. The dependence of Jcon grain size was also measured, and the correlation between flux pinning force and average grain size is discussed. The critical current density in the field range of < 27 T was strongly dependent on the grain size, and the critical currents at 14 T and 4.2 K can be scaled by the inverse grain size.

Keywords

Lead materials/devices; Molybdenum materials/devices; Superconducting materials; Critical current; Critical current density; Current measurement; Density measurement; Force measurement; Grain size; Lead; Magnetic field measurement; Size measurement; Temperature measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1987.1065004

Filename

1065004