Digitale Medien
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
68 (1996), S. 856-858
ISSN:
1077-3118
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
By measuring the magnetization hysteresis loops and the remanent magnetization relaxation for a melt-textured-growth YBa2Cu3O7−δ bulk with two different oxygen concentrations, we found that the extra oxygen deficiencies enhance the flux pinning and the fishtail effect in low and intermediate temperature region. This strongly suggests that the fishtail effect is related to the elementary pinning centers. A model concerning the nonuniform distribution of upper critical field among the pinning sites is proposed to explain the fishtail effect. Finally, we present some evidence to support this model. © 1996 American Institute of Physics.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.116556
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