Doping effect of Sr or Ca on single phased YBa2Cu3O7−y
✍ Scribed by Y. Zhao; H. Zhang; T. Zhang; S.F. Sun; Z.Y. Chen; Q.R. Zhang
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 314 KB
- Volume
- 152
- Category
- Article
- ISSN
- 0921-4534
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
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
Magnetoresistance measurements on sintered Y ~CauTh\_Ba~Cu~O, ~ samples with 1-2 .... ~ .-v x <= 0.1 are reported. By fitting the measured data to the Hikami-Larkin theory, we obtain coherence lengths, ~ab and ~c' and a phase breaking time ~# All these parameters are found to decrease with (Ca, Th)
Significant reduction in the magnitude of thermal conductivity of a sample of YBa=~CusOv-v (YB~) has been observed when the sample was stored in dry air for a period of one year, though it was reoxygenated to restore superconductivity. A modified BRT type analysis points to an increase in point defe