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 density in YBa2Cu3O6+x added with perovskite type impurity
β Scribed by K. Osamura; T. Kizu; T. Oku
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 738 KB
- Volume
- 226
- Category
- Article
- ISSN
- 0921-4534
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π SIMILAR VOLUMES
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The anisotropy of the first critical field Hcl is found to increase from H/c/~(0)/H~I(0)=4 to I0 on going to x=0.93 llc to. x=0.64 . For x=0.93, Hcl(0)=(950-+200)Oe, Hc1~( 0)=(230+20)Oe. For x=0.64, H/~(0)=(270-+30)Oe, .LC + Hc1(0)=(27-2)Oe. An anomalous linear T-dependence was found for H//c at low