Growth of Na-Doped Ca 2 CuO 2 Cl 2 Single Crystals under High Pressures of Several GPa
✍ Scribed by Kohsaka, Yuhki; Azuma, Masaki; Yamada, Ikuya; Sasagawa, Takao; Hanaguri, Tetsuo; Takano, Mikio; Takagi, Hidenori
- Book ID
- 127248169
- Publisher
- American Chemical Society
- Year
- 2002
- Tongue
- English
- Weight
- 111 KB
- Volume
- 124
- Category
- Article
- ISSN
- 0002-7863
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Single crystals of the high-pressure phase of (VO) 2 P 2 O 7 were grown by slowly cooling the melt at 3 GPa. Relevant reactions at high pressure and high temperature were studied in advance by in situ X-ray di4raction (XRD) measurements. The crystal structure of the high-pressure phase was determine
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