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Titolo:
DISTRIBUTION OF FLUX-PINNING ENERGIES IN POWDER-MELT-TEXTURED-GROWN YBA2CU3O7-DELTA
Autore:
LI GH; SUN YX; LIU ST; LIU GL; YAN SS; XIAO L; FU XK;
Indirizzi:
BEIJING UNIV,DEPT PHYS BEIJING 100871 PEOPLES R CHINA GEN RES INST NONFERROUS MET BEIJING 100088 PEOPLES R CHINA
Titolo Testata:
Solid state communications
fascicolo: 6, volume: 88, anno: 1993,
pagine: 451 - 455
SICI:
0038-1098(1993)88:6<451:DOFEIP>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
CRITICAL CURRENTS; SUPERCONDUCTORS; MOTION; CREEP; CRYSTAL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
G.H. Li et al., "DISTRIBUTION OF FLUX-PINNING ENERGIES IN POWDER-MELT-TEXTURED-GROWN YBA2CU3O7-DELTA", Solid state communications, 88(6), 1993, pp. 451-455

Abstract

Flux pinning energies and their distributions at 77 K in a Powder-Melt-Textured-Grown YBa2Cu3O7-delta sample have been determined by 90 degrees rotating sample magnetic measurements. These measurements are done in three different configurations in which the relative orientationsbetween the trapped flux and the depinning fields vary. Four kinds ofpeaks are found in the distribution curves. Besides the core pinning with energy of 0.2-0.3 eV, the results suggest the existence of magnetic pinning due to the energy decrease of both the core and the surrounding supercurrents of a flux line. Twin boundaries show the strongest pinning. Interactions between flux lines might make an additional contribution.

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Documento generato il 22/01/20 alle ore 12:59:58