This article is cited in 1 paper

Superconductivity

Oxygen atomic displacement waves in the lattice of the Bi, Pb-2223 phase composite annealed in an atmosphere with a low oxygen (O$_2$ + N$_2$) content

S. V. Sudareva^a, M. V. Kuznetsov^b, T. P. Krinitsina^a, E. I. Kuznetsova^a, Yu. V. Blinova^a, E. P. Romanov^a, D. N. Rakov^c, Yu. N. Belotelova^c, T. E. Kurennykh<sup>a

a</sup> Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg
^b Institute of Solid State Chemistry, Urals Branch of the Russian Academy of Sciences, Ekaterinburg
^c Bochvar Russian Scientific Research Institute of Inorganic Materials, Moscow

Abstract: After annealing of Bi, Pb-2223/Ag composites in a nitrogen-oxygen atmosphere with a low oxygen content in the 2223 phase, cross-polarized waves of oxygen atomic displacements have been revealed by electron diffraction in the [010]$_{2223}$ direction. It has been demonstrated using the methods of X-ray photo-electron spectroscopy and nuclear microanalysis that nitrogen does not interact with the 2223 lattice and that the oxygen index (9.67 $\pm$ 0.20) becomes less than the stoichiometric index ($x$ = 10). It has been found that the generation of atomic displacement waves is due to the deficiency of oxygen in the double Bi–O layers.

Received: 14.06.2011

 English version: Physics of the Solid State, 2012, 54:2, 248–254

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