| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10636959 | Solid State Sciences | 2005 | 8 Pages |
Abstract
The solid solution La1âxEuxBaFeCuO5+δ synthesized in air with 0⩽δ⩽0.13 was studied by X-ray diffraction, 57Fe Mössbauer spectroscopy and susceptibility measurements. Double perovskite with YBaFeCuO5-type structure was observed except for x=0 composition which has a cubic cell. Fe and Cu are generally in square pyramidal environments which differ by their distortion: axially compressed for Fe and elongated for Cu. Mössbauer studies showed the existence of pyramidal Fe3+, Fe3+y and octahedral Fe4+. Electric field gradient calculations allowed to better understand the origin of the distortion of the two pyramidal iron sites.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Lahcen Er-Rakho, Ninh Nguyen, Annie Ducouret, A. Samdi, Claude Michel,