Title, author, abstract

title

3RD HARMONIC AC SUSCEPTIBILITY IN OXIDE SUPERCONDUCTORS

authors

Edmund S. Otabe and Teruo Matsushita
Department of Computer Science and Electronics, Kyushu Institute of Technology,
680--4 Kawazu, Iizuka, 820 JAPAN

abstract

In order to investigate the effect of reversible motion of fluxoids, the 3rd harmonic of complex AC susceptibility was measured for Y-based superconducting powder and QMG-processed bulk specimens. The critical current density was estimated from the experimental results using the theoretical model of Campbell for the reversible motion of fluxoids and compared with the estimation from DC magnetization. Deviation from the estimated value from DC magnetization is remarkable when the applied AC magnetic field is small. It is considered that the reversible fluxoid motion at low AC magnetic fields is much more prominent than expected in the present theory.

Original paper appears in

8th International Symposium on Superconductivity
October 30-November 2, 1995
Hmamatsu, Shizuoka, Japan

• paper(gzip PS file, 49Kbyte)