Neutron Diffraction Studies on La2-xDyxCa2xBa2Cu4+2xOz Superconductors

Details Neutron Diffraction Studies on La2-xDyxCa2xBa2Cu4+2xOz Superconductors Neutron Diffraction Studies on La2-xDyxCa2xBa2Cu4+2xOz Superconductors

2004-08-14

arxiv.org/abs/cond-mat/0408333v1

Published in Pramana - J. Physics (2004), Vol. 63, Pg. 213 - 219

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1007/BF02704975

Structural studies on Dy-substituted La-2125 type superconductors have been carried out by neutron diffraction experiments at room temperature using a monochromatic neutron beam of wavelength lambda = 1.249 Angstroms. A series of samples with La2-xDyxCa2xBa2Cu4+2xOz stoichiometric composition, for x = 0.1 - 0.5, have been studied for their structural properties. A tetragonal Y-123 unit cell was taken as the starting model for the Rietveld analysis. All the samples fit into the starting model, exhibiting no structural transition taking place with increasing dopant concentration. The results of Rietveld analysis and structural properties are discussed in detail.

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