Mössbauer spectra of 57Fe in a thick film YBa2(Cu0.97Fe0.03)3O7 - x irradiated by a large dose of γ-rays from 60Co have been measured. The variation of the relative intensities of some subspectra of 57Fe in the Mössbauer spectra of the thick film YBa2(Cu0.97Fe0.03)3O7 - x after irradiation can be observed. This variation indicates that the change of the coordination environment around some Fe atoms in the lattice occurs due to irradiation. The relative intensity of subspectrum D1(Fe) at the Cu(1) site decreases and that of subspectrum D4(Fe) at the Cu(1) site increases. This may be because of the possible oxygen atom hopping between the coordination environments of D1(Fe) and D4(Fe) in the lattice caused by irradiation. The effect of irradiation on the coordination environment around the Fe atom at the Cu(2) site is not appreciable.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering