Structural Investigation of Zno:Fe Doped System
Paskaš Mamula, Bojana
Paunović, Novica M.
MetadataShow full item record
Nanosized powder of ZnO doped with 5 at% of Fe was prepared and characterized by X ray diffractometry, while local atomic arrangements around different absorbing atoms was characterized by EXAFS measurements. Also, existence of significant magnetic moments of absorbant atoms was investigated using XMCD technique, while overall magnetic properties were sampled by magnetometric measurements. To get better insight in mechanisms behind such a subtle effect, ab initio calculations of electronic structure of dopped system has also been performed. Although, calculations predict small magnetic moments on Fe and to small extent on neighbouring atoms, XMCD and magnetic measurements reveal no sign of magnetic ordering in this compound, proving once more the decisive role of preparation technique in obtaining the desired effect.
Keywords:diluted magnetic semiconductors / X-ray absorption spectroscopy / ab initio
- Radiation Interaction wtih Material and Its Use in Technologies, 4th International Conference on Radiation Interaction with Material and Its Use in Technologies, May 14-17, 2012, Kaunas, Lithuania