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Synthesis and characterization of Mn-doped ZnO nanorods grown in an ordered periodic honeycomb pattern using nanosphere lithography

Yilmaz, S. and Garry, Seamus and McGlynn, Enda and Bacaksiz, E. (2014) Synthesis and characterization of Mn-doped ZnO nanorods grown in an ordered periodic honeycomb pattern using nanosphere lithography. Ceramics International, 40 (6). pp. 7753-7759. ISSN 0272-8842

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We report a study of the structural, optical and magnetic properties of undoped and Mn-doped ZnO nanorods grown by chemical bath deposition in a periodic honeycomb lattice formation. Mn-doping is accomplished by a diffusion process at a constant time of 8 h for different temperatures of 500, 600 and 700 °C. Undoped and Mn-doped ZnO nanorods had a hexagonal wurtzite structure with a (002) preferred orientation. From SEM results, it was seen that Mn-doped ZnO nanorods grew vertically in the honeycomb lattice with lengths of 0.8 μm. XPS results showed that Mn3+ ions was successfully incorporated in the ZnO matrix by substituting for Zn2+ ions and that Mn-doping increased the number of oxygen vacancies in ZnO compared to undoped ZnO. This result was also supported by photoluminescence data at 10 K. Magnetic data showed that all the samples exhibited ferromagnetic character. Although the origin of undoped ZnO is related to oxygen vacancy-induced d0 ferromagnetism, bound magnetic polarons are responsible from the ferromagnetism of Mn-doped ZnO samples which have Tc values above the room temperature.

Item Type:Article (Published)
Uncontrolled Keywords:ZnO; Nanorods; Magnetic
Subjects:Physical Sciences > Spectrum analysis
Physical Sciences > Nanotechnology
Physical Sciences > Crystallography
Physical Sciences > Semiconductors
DCU Faculties and Centres:Research Initiatives and Centres > National Centre for Plasma Science and Technology (NCPST)
DCU Faculties and Schools > Faculty of Science and Health > School of Physical Sciences
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Copyright Information:© 2014 Elsevier
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:19921
Deposited On:17 Apr 2014 11:10 by Enda McGlynn. Last Modified 24 Feb 2017 11:20

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