Abstract
Properties of the oxygen sublattice structure of the YBa2Cu3O7 −x crystal are studied using the diffusion model of ion channeling. The angular dependence of the elastic resonance scattering of helium ions on oxygen nuclei along the 〈001〉 direction is measured at an ion energy of 3.055 MeV. Steps are observed in the scattering yield at an angle of about 0.4°. The best fit of the calculated angular dependence of elastic resonance scattering to the experimental data is attained under the assumption that the oxygen rows contain vacancies corresponding to a fraction (not exceeding 20%) of the disordered oxygen atoms, which are randomly distributed in the plane normal to the 〈001〉 direction, and that the oxygen atoms in the rows are displaced from their equilibrium positions in a direction normal to the 〈001〉 axis.
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Translated from Fizika Tverdogo Tela, Vol. 47, No. 9, 2005, pp. 1552–1558.
Original Russian Text Copyright © 2005 by Borovik, Malyshevsky, Rakhimov.
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Borovik, A.S., Malyshevsky, V.S. & Rakhimov, S.V. Properties of the oxygen sublattice structure of YBa2Cu3O7−x crystal studied by ion channeling. Phys. Solid State 47, 1611–1617 (2005). https://doi.org/10.1134/1.2045342
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DOI: https://doi.org/10.1134/1.2045342