In YBa2CusOr samples of different shape time dependent magnetization currents were induced at 4.2K by the application of rapid magnetic field changes. This contactless method allows the study of the intergrain and intragrain currents in the resistive flux flow state.
The effect of bias magnetic fields and currents on ac losses in type II superconductors
โ Scribed by M.A.R. LeBlanc
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 1018 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0964-1807
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โฆ Synopsis
We review the experimental and theoretical study of hysteresis losses, W,, in monolithic and isotropic type II superconductors subjected to an alternating magnetic field H,, or alternating current Z,, in the presence of a static bias magnetic field Hbias or bias current Ibias. Five situations are addressed. (i) W,, (Hbias, Ha,) vs Hbias, where Hbim is // to Ha, and Tis constant, (ii) W,, (Hbim, H,,) vs Z (iii) K, (Ibias. L) vs Ibias, (iv) Kc CL, H//l, where Hbias = H,, is along the axis of a wire, and, (v) W,, (Hbias, H,) in ribbons where H bras is tilted with respect to H,,.
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