Raman scattering of YBa2Cu3Ox single crystals with different oxygen contents at high pressures
Goncharov A. F., Muinov M. R., Uvarova T. G., Stishov S. M.
The Raman spectra of YBa2Cu3Ox single crystals (x = 6.25,6.75,7.0) were measured at pressures up to 22 GPa (35 GPa for χ = 6.25) at room temperature under nearly hydrostatic conditions. The frequency-volume curves for the most Raman-active fundamental vibrations were derived from the present data making use of the previous high-pressure study of the equations of state of YBa^^CX, compound.