In this paper the critical density for a polycrystalline sample is calculated assuming a model of weakly coupled superconducting grains and the influence of grain size on the maximum tunnelling current is investigated. In addition the Josephson vortices are shown to be bound by the pinning force inh
Critical current and magnetoresistance hysteresis in polycrystalline YBa2Cu3O7−x
✍ Scribed by K.Y. Chen; Y.J. Qian
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 460 KB
- Volume
- 159
- Category
- Article
- ISSN
- 0921-4534
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
Magnetization curves of bulk REBa2Cu3O7= v samples (RE=Gd, Dy, Er, Eu, Y) with T~(R = 0) ~> 90 K have been measured at various temperatures for different sweep amplitudes of the magnetic field up to Hmax = 4.7 T. Using the critical state model, intergranular and intragranular critical current densit
The influence of various processing parameters on the critical currents obtained in YBCO + Ag composite thick films has been investigated. These include the use of several precursor YBCO inks produced by different calcination procedures, the effect of both processing temperature and cooling rate, an
A detailed discussion of the influence of the rotation of Ag-YBa2Cu307 wires about their longitudinal axis in an external magnetic field on the critical current value is presented. In particular the angular dependence of the local field, defined as a superposition of the trapped flux and the externa