0384293 - FZÚ 2013 RIV GB eng J - Článek v odborném periodiku
Vachhani, P.S. - Dalba, G. - Ramamoorthy, R.K. - Rocca, F. - Šipr, Ondřej - Bhatnagar, A.K.
Cu doped ZnO pellets: study of structure and Cu specific magnetic properties.
Journal of Physics-Condensed Matter. Roč. 24, č. 50 (2012), s. 1-7. ISSN 0953-8984. E-ISSN 1361-648X
Grant CEP: GA ČR(CZ) GAP108/11/0853
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: ZnO * doping * structure * magnetism
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 2.355, rok: 2012 ; AIS: 1.04, rok: 2012
DOI: https://doi.org/10.1088/0953-8984/24/50/506001

Cu doped ZnO polycrystalline pellets were synthesized with Cu concentrations varying from 2 to 10 wt% by a solid state reaction route (mixing of ZnO and CuO powders). By analyzing the XAS data, we found that at low Cu content most of the Cu atoms substitute for Zn inside the ZnO wurtzite lattice, while for higher Cu concentrations some unreacted CuO remains segregated from the Zn(1-x)Cu(x)O solid solution. Element-specific magnetic measurements were carried out by x-ray magnetic circular dichroism (XMCD) and compared to the results of ab initio calculations. The XMCD signal at the Cu K-edge originates from magnetic moments localized at Cu sites and, by monitoring the magnetic field dependence, we concur that these moments are associated with a paramagnetic state.
Trvalý link: http://hdl.handle.net/11104/0213992