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Vibrational Raman Scattering from high TC single Crystals

Published online by Cambridge University Press:  28 February 2011

D. M. Krol
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
M. Stavola
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
L. F. Schneemeyer
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
J. V. Waszczak
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
W. Weber
Affiliation:
Inst, fur Nukleare Festkörperphysik, Kernforschungszentrum Karlsruhe, D-7500 Karlsruhe 1, Federal Republic of, Germany
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Abstract

Polarized Raman spectra have been measured on single crystals of the high Tc materials A2BCu3Ox with A=Ba and Sr, B=Y and La and 6<x<7. The dependence of the 500 cm-i peak position (αzz)on chemical composition is in agreement with its assignment to the O(1) axial stretching vibration. The intensity of the 600 cm1 band, which has been ascribed to a defect induced Cu-O mode, strongly depends on the crystal preparation and resulting purity.

Type
Research Article
Copyright
Copyright © Materials Research Society 1988

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References

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