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Continuous and Localized Mn Implantation of ZnO
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics.
Univ Complutense Madrid.
University of Valladolid.
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2009 (English)In: NANOSCALE RESEARCH LETTERS, ISSN 1931-7573, Vol. 4, no 8, 878-887 p.Article in journal (Refereed) Published
Abstract [en]

We present results derived from continuous and localized 35 keV Mn-55(+) ion implantations into ZnO. Localized implantations were carried out by using self-ordered alumina membranes as masks leading to ordered arrays of implanted volumes on the substrate surfaces. Defects and vacancies in the small implantation volumes of ZnO were generated due to the implantation processes besides the creation of new phases. Rapid thermal annealing was applied in the case of continuous implantation. The samples were characterized by HRSEM, GIXRD, Raman spectroscopy and RBS/C. Magnetic characterization of the samples pointed out appreciable differences among the samples obtained by the different implantation methods. This fact was mainly attributed to the different volume/surface ratios present in the implanted zones as well as to the increase of Mn atom concentrations along the grain frontiers in the nanostructured surfaces. The samples also showed a ferromagnetic transition phase at temperature value higher than room temperature.

Place, publisher, year, edition, pages
New York: Springer , 2009. Vol. 4, no 8, 878-887 p.
Keyword [en]
Ion implantation; Nanoporous anodic alumina; Magnetic semiconductors; Magnetic properties; ZnO
National Category
Condensed Matter Physics Subatomic Physics Condensed Matter Physics
URN: urn:nbn:se:liu:diva-20163DOI: 10.1007/s11671-009-9327-5OAI: diva2:233674
Available from: 2009-09-01 Created: 2009-08-31 Last updated: 2014-09-30

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Jensen, Jens
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