Ndl.85Ceo.15CuO 4 single crystals of improved quality have been grown by the TSFZ method at an oxygen partial pressure i~1 ambient atmosphere of 0.2, 0.1, 0.08 and 0.01 atm. Superconductivity in the as-grown state has been observed in the crystals grown at 0.08 and 0.01 atm. The improvement of the C
TSFZ growth of Nd2-xCexCuO4 single crystals at low oxygen pressure
โ Scribed by K. Gamayunov; I. Tanaka; H. Kojima
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 138 KB
- Volume
- 235-240
- Category
- Article
- ISSN
- 0921-4534
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๐ SIMILAR VOLUMES
ystals of the N-type superconducting Nd2\_~CexCuO4\_~. system have been grown by a self-flux technique. In this method, excess Ce is required to obtain single crystals with optimal superconducting properties. Crystals grown by this technique show superconducting transition temperatures with onsets o
A strong dependence of the cerium distribution coefficient (Kc~) on oxygen partial pressure P[O2] has been shown in direct .lalm 0.2 arm TSFZ experiments by changing the oxygen pressure during Nd2\_xCe~CuO4 single crystal growth. The ratio of Kยฐ~ /Kc~ has been found to be equal to ~ 0.62. Absolute v