The effect of different doses of ฮณ-rays on the behavior of the critical current density, J c in an YBa 2 Cu 3 O 7 polycrystalline sample has been investigated at high temperatures. The samples were irradiated at room temperature by a 60 Co ฮณ-ray source at a dose rate of 0.5 MR/h. J c was found to in
Anomalous magnetic field dependence of the critical current density in polycrystalline YBa2Cu3O7
โ Scribed by Shi Li; M.J. Darwin; J. Deak; D. Majer; P. Metcalf; E. Zeldov; M. McElfresh
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 167 KB
- Volume
- 235-240
- Category
- Article
- ISSN
- 0921-4534
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
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
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