Magnetic Properties of Mn-Doped ZnO Nanowires
Sergey Granovsky, I.Yu. Gaidukova, Ashot S. Markosyan, Jia Grace Lu, Chung-Jen Chien, Markus Doerr, Thomas Papageorgiou, J. Wosnitza · Diffusion and defect data, solid state data. Part B, Solid state phenomena/Solid state phenomena · 2009
Structural, magnetic and transport properties of undoped and Mn-doped quasi one-dimensional ZnO nano-wires formed as dendrite crystals of different width have been studied. All Mn-doped nanowires (Mn content 16% and 27 %) exhibit a ferromagnetic behavior, which is significantly temperature dependent. A small magnetic signal detected up to the room temperature is supposed to be due to small amounts of magnetic impurities. Analysis of the temperature dependencies of magnetization shows that the observed magnetic properties can be caused by the host ferromagnetic matrix with Curie temperature TC 40 K.