ISSN:
1432-0630
Keywords:
PACS: 74; 74.72.-h; 74.72.Bk; 74.62.Bf
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract. Single phase Ba-free Sr-based YSr2Cu 3-x M x O7+δ (M=Mo, W and Re) compounds have been stabilized by chemical doping. Superconductivity is observed for these phases in the range 30–45 K. X-ray diffraction studies suggest a relatively small orthorhombicity compared to Ba-analogue. X-ray photoelectron spectroscopic investigations reveal that the stabilizing cations are in the hexavalent state. The observation of the higher oxidation state of M-ions accounts for the excess oxygen content in these phases which is in accordence with the diffraction results.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003390050461
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