ISSN:
1572-9605
Keywords:
Sr-Ca-Cu-O superconductor
;
high-pressure synthesis
;
oxidizer
;
“0223” structure
;
“infinite-layer” structure
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract It is shown for (Sr, Ca)1−y CuO2.00+z (nominal composition) superconductors fabricated under a high pressure of 5 GPa and at 930°C that, as z increases, the Meissner fraction increases from a few percent to 20% and then starts to decrease. In the X-ray powder diffraction pattern for the sample with the maximum Meissner fraction, it is obvious that the “infinite-layer” structure has been decomposed and a new structure becomes the major phase. It appears that the new structure is the “0223” structure which consists of rock-salt and the “infinite-layer” type blocks. This material is likely to be a new superconducting cuprate.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00730368
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