Influence of the improved reduction technique on superconductivity in Nd1.85Ce0.15Cu1±yO4−δ
✍ Scribed by M. Plebańczyk; T. Klimczuk; W. Sadowski
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 116 KB
- Volume
- 460-462
- Category
- Article
- ISSN
- 0921-4534
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The fluorine-doped n-type superconductors Ndl.s5Ce0.15CuO4\_x\_yFy (nominal composition) are synthesized with CuF z as one of the reactants. Especially, it is found that the superconductivity of Nd1.85Ce0.15CuO4\_~ is improved with Tc °n= 27 K, T ° = 15.5 K when CuF 2 is taken as a source of atmosph
We observe a sign reversal of the Hall resistivity in the mixed state of the n-type superconductor Ndl.s5Ceo.15CuO4. ~. Such all anomaly, which has also been observed earlier in the p-type oxide superconductors, has been widely attributed to thermoelectric effects, pinning effects, or else to compli