H-C I Kao et al 1996 Supercond. Sci. Technol. 9 893 doi:10.1088/0953-2048/9/10/011
Rietveld analysis and superconductivity of 
compounds
H-C I Kao
, Y D Leu, W N Huang, C-M Wang, D H Chen
and T J Lee§
A series of single-phase 
compounds with tetragonal triple-perovskite structure is studied by Rietveld analysis. For 
, all of the 
ions enter the centre site: the 
site of the tetragonal 
phase. For 
, a maximum of about 1/2 of the sites are occupied by ions and the extra ions enter the 
site. Double plateaux are found between 
and 
(the difference between the occupancy factor of ions at the site and that of 
ions at the site). It is suggested that of the La - Ca - Ba - Cu - O compounds containing 50 mol% copper atoms with tetragonal triple-perovskite structure can be predicted from the correlation of versus .
- PACS
- Subjects
- Dates
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Issue 10 (October 1996)
Received 1 July 1996
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Rietveld analysis and superconductivity of compounds
H-C I Kao et al 1996 Supercond. Sci. Technol. 9 893
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