A method to control grain-boundary properties in melt-textured YBa2Cu3O7−x superconductors
✍ Scribed by Dag W.A. Willén; Kamel Salama
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 641 KB
- Volume
- 201
- Category
- Article
- ISSN
- 0921-4534
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It has been shown that Nd 1+x Ba 2-x Cu 3 O 7-x could exhibit a pronounced J c (H) peak effect, which results in an enhancement of the critical current density under the medium range magnetic field. Additions of small quantities of Nd 2 O 3 into Pt-doped YBa 2 Cu 3 O 7-x (Y123) resulted in the forma
The power dissipation of high T c superconductors is an important factor to be evaluated for applications involving a.c. operation. We have investigated, by the electrical method, the a.c. losses of melt-textured YBa2Cu307\_x bars carrying 50 Hz alternating current at 77 K. The samples, prepared by