Reduced flux motion via flux creep annealing in high- Jc single-crystal Y1Ba2Cu3O7

The stabilization of magnetic flux in a high-temperature superconductor (a proton-irradiated Y1Ba2Cu3O7 crystal) was investigated, by operating with subcritical current density J. Using the thermal history to obtain an induced current density J not greater than Jc, a drastically reduced relaxation r...

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Veröffentlicht in:	Applied physics letters 1991-11, Vol.59 (20), p.2612-2614
Hauptverfasser:	THOMPSON, J. R, YANG REN SUN, HOLTZBERG, F, MALOZEMOFF, A. P, CHRISTEN, D. K, KERCHNER, H. R, OSSANDON, J. G, MARWICK, A. D
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Physics Properties of type I and type II superconductors Superconductivity
Online-Zugang:	Volltext
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Zusammenfassung:	The stabilization of magnetic flux in a high-temperature superconductor (a proton-irradiated Y1Ba2Cu3O7 crystal) was investigated, by operating with subcritical current density J. Using the thermal history to obtain an induced current density J not greater than Jc, a drastically reduced relaxation rate dM/dt (M = magnetization) was observed after 'flux creep annealing'. The results show that the field gradient about J about M determined the relaxation rate, independent of the sample's H-T history, in agreement with recent theory. (Author)
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.105918