ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We report on the crystallography and microstructure of six oxides in the Tl-Ca-Ba-Cu-O system with nominal compositions Tl1Ba2Cu1O5, Tl1Ca1Ba2Cu2O7, Tl1Ca2Ba2Cu3O9, Tl2Ba2Cu1O6, Tl2Ca1Ba2Cu2O8, and Tl2Ca2Ba2Cu3O10. The structures consist of one, two, or three Cu perovskite-like units sandwiched between Tl-O monolayers or bilayers. The predominant defects in the crystals with bilayer and trilayer Cu perovskite-like units are stacking faults that produce local intergrowths of related structures. The density of stacking defects in these oxides correlates with changes in the superconducting transition temperatures.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.100611
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