Phases found at grain boundary of YBa2Cu3O7-d 50 nm films on SrTiO3 by enhanced anomalous scattering at O:K, Cu:L2,3 and Ba:M4,5 edges

J. V. Acrivos

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Phases found at grain boundary of YBa2Cu3O7-d 50 nm films on SrTiO3 by enhanced anomalous scattering at O:K, Cu:L2,3 and Ba:M4,5 edges

J. V. Acrivos

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Abstract

A new phase is detected within 100micrometers of 24 DEG ab grain boundary (GB) in YBa2Cu3O7-d 50 nm films on SrTiO3 by enhanced (001) anomalous scattering. Site identification and temperature dependence is interpreted using crystallographic weights to distinguish enhanced scattering from total electron yield and fluorescence spectra. The c-axis, c0 indicates that only ortho-I phase is present far from GB, both ortho-I and II phases are present near GB. The phase c0 is constant versus temperature across the transition to superconductivity.

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J. V. Acrivos. 2005-09-30. Phases found at grain boundary of YBa2Cu3O7-d 50 nm films on SrTiO3 by enhanced anomalous scattering at O:K, Cu:L2,3 and Ba:M4,5 edges. https://arxiv.org/abs/cond-mat/0510003

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