In this second part of a series of three publications on the magnetization of low-x superconductors, we present experimental and theoretical results on the lower critical field Hcl. We concentrate on highly pure niobium and vanadium samples. Both materials are type-II superconductors with a first or
The hysteresis of magnetization in the generalized critical-state model Low-field approximation
โ Scribed by J.L. Chen; T.J. Yang
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 486 KB
- Volume
- 224
- Category
- Article
- ISSN
- 0921-4534
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It was found that pressure has a strong influence on the critical current hysteresis loop of cerar01cs at H ~ I0 kOe. The phenomenon is attributed to the critical current hysteresis of separate Josephson contacts and is due to the Abrikosov vortex density gradient within granules. The gradient defin
We present results of the determination of the lower critical magnetic fields: Josephson He1 J, nc2 J and Abrikosov Hcl J type for the Y-123 and Bi-2212 layers onto MgO substrate. Based on the DC magnetic field dependence of the real part Z" of complex AC susceptibility we assumed that He1J = 3.10e