Unusual defect and domain structure in YBa2Cu4O8 (Y124) single crystals
โ Scribed by H. Zhang; Y.Y. Wang; V.P. Dravid; B. Dabrowski; K. Zhang
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 951 KB
- Volume
- 207
- Category
- Article
- ISSN
- 0921-4534
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
We aimed to find the correlation between the structure of YBCO single crystals with their high Jc values (-105 A/cm2 at 77 K, zero magnetic field). The most remarkable feature which belongs to high-Jc crystals was found to be the presence of spirals on their surface. Detailed examination of the ion-
The transition temperature of \(\mathrm{YBa}_{2} \mathrm{Cu}_{4} \mathrm{O}_{8}(124)\) is increased by about \(10 \mathrm{~K}\) by doping with calcium, whereas Ca substitution in \(\mathrm{Y}_{2} \mathrm{Ba}_{4} \mathrm{Cu}_{7} \mathrm{O}_{14+x}\) (247) has no effect on \(T_{\mathrm{c}}\). X-ray str
## Crystals of REBa2Cu40 s (RE = Yb, Tm, Er, Ho, Dy, and Yl-xCax) were grown at 1100ยฐC and 600 bar of 02 pressure in a hot isostatic press furnace. Single crystal X-ray diffraction data show that all compounds crystallized in space group Ammm (#65) with the approximate lattice parameters a ~-3.82