TY - JOUR
T1 - A comparative study on the ferromagnetic properties of undoped and Mn-doped ZnO
AU - Wang, X. L.
AU - Lai, K. H.
AU - Ruotolo, A.
PY - 2012/11/25
Y1 - 2012/11/25
N2 - We have investigated the origin of the ferromagnetic ordering in undoped and Mn-doped ZnO thin films. A systematic comparison is presented between two sets of films grown by pulsed laser deposition from targets prepared under the same conditions. We show that ferromagnetic ordering in both compounds is directly related to the concentration of oxygen vacancies. The incorporation of Mn dramatically increases the magnetic moment in highly oxygen-deficient films. By analyzing the photoluminescence spectra and the structural properties of the films, we can exclude that magnetic ordering in our films originates from unintentional doping. © 2012 Elsevier B.V. All rights reserved.
AB - We have investigated the origin of the ferromagnetic ordering in undoped and Mn-doped ZnO thin films. A systematic comparison is presented between two sets of films grown by pulsed laser deposition from targets prepared under the same conditions. We show that ferromagnetic ordering in both compounds is directly related to the concentration of oxygen vacancies. The incorporation of Mn dramatically increases the magnetic moment in highly oxygen-deficient films. By analyzing the photoluminescence spectra and the structural properties of the films, we can exclude that magnetic ordering in our films originates from unintentional doping. © 2012 Elsevier B.V. All rights reserved.
KW - Dilute magnetic semiconductors
KW - UV photoluminescence
KW - Zinc oxide
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U2 - 10.1016/j.jallcom.2012.07.035
DO - 10.1016/j.jallcom.2012.07.035
M3 - RGC 21 - Publication in refereed journal
SN - 0925-8388
VL - 542
SP - 147
EP - 150
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -