Spectroscopic inspection of oxygen ordering in Y-Ba-Cu-O

Abstract

We report the Y-Ba-Cu--O infrared (IR) transmittance, electron paramagnetic resonance (EPR) spectra and X-ray diffraction pattern evolution through sample's transition from oxygen disordered tetragonal 06 to orthorhombic 06 8 phase. The transmittance spectrum of the sample prepared by conventional technique and quenched in liquid nitrogen is considerably distorted by lattice defects. After 478