Raman-scattering probe of oxygen ordering during room-temperature annealing ofYBa2Cu3O7−δ

1 April 1993

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 47 (14) , 9148-9150
https://doi.org/10.1103/physrevb.47.9148

Abstract

Using Raman spectroscopy we have monitored oxygen reordering processes in a room-temperature annealing experiment. We have discerned several structures corresponding to different oxygen coordination of Cu(1) in the basal plane by analyzing the line shape of the Raman band of apical-oxygen vibrations. We observed a chain-growing process with increasing annealing time followed by oxygen rearrangements in various orthorhombic superstructures.

Keywords

This publication has 15 references indexed in Scilit:

Room-temperature annealing of ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$ observed by optical measurements
Physical Review B, 1992
Anisotropy of the optical dielectric function in theabplane forYBa2Cu3O7−δ
Physical Review B, 1992
Time-dependent oxygen ordering and its effect on $T_{c}$ in off-stoichiometric ${YBa}_{2}$ ${Cu}_{3}$ $O_{z}$
Physical Review B, 1991
Anisotropy and oxygen-stoichiometry dependence of the dielectric tensor of ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$ (0≤δ≤1)
Physical Review B, 1991
Raman spectroscopy of high-temperature superconducting YBa2Cu3Ox single crystals and films
Physics Reports, 1990
Observation of temperature-dependent site disorder in ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$ below 150 °C
Physical Review B, 1990
Time-dependent superconducting behavior of oxygen-deficient ${YBa}_{2}$ ${Cu}_{3}$ $O_{x}$ : Possible annealing of oxygen vacancies at 300 K
Physical Review B, 1990
Low-temperature long-range oxygen order in YBa2Cu3Oz
Nature, 1990
Optical properties of copper-oxygen planes in superconducting oxides and related materials
Physical Review B, 1989
Untwinned single crystals of $Y {Ba}_{2} {Cu}_{3} O_{7 - δ}$ : An optical investigation of the $a - b$ anisotropy
Physical Review B, 1988