ZnO:Mn nanorods and ZnO/ZnO:Mn core/shell structures: Synthesis and local atomic structure

Low-dimensional systems investigated by x-ray absorption spectroscopy: a selection of 2D, 1D and 0D cases

“…The authors proposed the hybridization of these Mn 2+ ions with defects in the host material, which were suggested to play a key role in the observed ferromagnetism. The group of Soldatov has deeply investigated by both experimental and computational approaches the effect of different doping in ZnO nanowires [497,667,668]. In the first work [667], the authors reported a Mn K-edge XANES investigation of the local atomic structure of Mn in ZnO:Mn nanorods synthesized with high pressure pulsed-laser deposition method.…”

“…The group of Soldatov has deeply investigated by both experimental and computational approaches the effect of different doping in ZnO nanowires [497,667,668]. In the first work [667], the authors reported a Mn K-edge XANES investigation of the local atomic structure of Mn in ZnO:Mn nanorods synthesized with high pressure pulsed-laser deposition method. It was found that most of the Mn atoms substitute for Zn atoms, with a minority fraction of Mn atoms located in interstitial sites of the ZnO host lattice [667].…”

“…In the first work [667], the authors reported a Mn K-edge XANES investigation of the local atomic structure of Mn in ZnO:Mn nanorods synthesized with high pressure pulsed-laser deposition method. It was found that most of the Mn atoms substitute for Zn atoms, with a minority fraction of Mn atoms located in interstitial sites of the ZnO host lattice [667]. In the successive work [668], they improved the data analysis underlining that a precise reproduction of XANES spectral features of the system could be obtained only with the use of a non-muffin-tin potential.…”

Synthesis, micro-structural and magnetic properties of Mn-doped ZnO nanowires

“…Thus, some recent studies focus on these microstructural features. [22][23][24][25][26][27][28][29] For example, first-principle calculations have predicted that the oxygen dangling bonds on the surface of ZnO : Mn nanowires (NWs) can stabilize their ferromagnetism. 26 Besides the theoretical investigations, some experimental techniques have been developed to probe the micro-structure.…”

“…For instance, by X-ray absorption spectroscopy and electron energy-loss spectroscopy, Mn interstitials and sub-nanoscale MnO clusters have been found to be present in ZnO : Mn nanostructures. 27,28 Positron annihilation spectroscopy has also been used to trace the Mn-doping-induced evolution of vacancytype defects. 29 However, more work is needed to understand the correlation between micro-structure and magnetic properties of ZnO : Mn nanostructures.…”