Local environment around the oxygen atoms in Y-Ba-Cu-O studied x-ray absorption fine structure (XAFS) spectroscopy

摘要

The local environment about oxygen atoms in the CuO(sub 2) plane in YBa(sub 2)Cu(sub 3)O(sub 7) single crystals has been investigated by orientation-dependent x-ray absorption fine structure (XAFS) spectroscopy at the O ls edge using bulk-sensitive fluorescence-yield-detection method. Within experimental accuracy ((plus minus)0.03 (Angstrom)) no structural change in local ordering about oxygen atoms in the CuO(sub 2) plane at 90 K has been detected. 14 refs.