Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
63 (1988), S. 4176-4178
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We report a detailed investigation of the magnetic hysteresis of YBa2Cu3O7 oxide in fields ranging from ∼0.2 Oe to 35 kOe and at different temperatures (4.2≤T≤100 K). It is shown that the magnetic behavior is that of a granular type-II superconductor in which strongly superconducting grains are coupled via less superconducting links. As a result, at low-H (H(approximately-less-than)20 Oe at 4.2 K) the sample appears like a single superconducting filament while at high enough field (H(approximately-greater-than)5 kOe) it behaves like a granular superconductor with most of the weak links being broken by the applied field. Five threshold fields are identified charaterizing the above magnetic regimes and the transition between them. It is concluded that the critical current density within the individual grains could attain 107 A/cm2.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.340242
| Library |
Location |
Call Number |
Volume/Issue/Year |
Availability |
