Abstract

Abstract Raman and far-infrared reflectance measurements were carried out on three samples of YBa 2 Cu 3 O 7−δ prepared under various thermal and mechanical treatment conditions. From the changes in the reflectance phonon spectra and the emission anisotropy of the characteristic line at 502 cm -1 the partial orientation of the microcrystal with the consecutive steps of sample treatment is inferred.

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