Synthesis, structure, and superconductivity of Ca2−xNaxCuO2Cl2
✍ Scribed by Z. Hiroi; N. Kobayashi; M. Takano
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 852 KB
- Volume
- 266
- Category
- Article
- ISSN
- 0921-4534
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📜 SIMILAR VOLUMES
Ca 2 CuO 2 Cl 2Ày Br y (0 6 y 6 2) has the K 2 NiF 4 -type structure with halogens (Cl and Br) at their apical sites and superconductivity can be achieved by substituting Ca 2+ sites with Na + . We have succeeded in making a comprehensive superconducting phase diagram of Ca 2Àx Na x CuO 2 Cl 2Ày Br
We synthesized Ca 1Àx Na x CuO 2 Cl 2 single crystals for 0.06 6 x 6 0.18 in the several GPa pressure range. The Na content, x, critically depended on the applied pressure, not the initial stoichiometric composition. A superconducting transition temperature of 27 K was obtained for x $ 0.18, which i