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EPR investigation of pure and Co-doped ZnO oriented nanocrystals
Aix Marseille University, France.
Linköping University, Department of Science and Technology. Linköping University, Faculty of Science & Engineering.
Aix Marseille University, France.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
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2017 (English)In: NANOTECHNOLOGY, ISSN 0957-4484, Vol. 28, no 3, 035705Article in journal (Refereed) Published
Abstract [en]

Pure and cobalt-doped zinc oxide aligned nanorods have been grown by the low-temperature (90 degrees C) aqueous chemical method on amorphous ZnO seed layer, deposited on a sapphire substrate. High crystallinity of these objects is demonstrated by the electron paramagnetic resonance investigation at liquid helium temperature. The successful incorporation of Co2+ ions in substitution of Zn2+ ones in the ZnO matrix has also been confirmed. A drastic reduction of intrinsic ZnO nanorods core defects is observed in the Co-doped samples, which enhances the structural quality of the NRs. The quantification of substitutional Co2+ ions in the ZnO matrix is achieved by comparison with a reference sample. The findings in this study indicate the potential of using the low-temperature aqueous chemical approach for synthesizing material for spintronics applications.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2017. Vol. 28, no 3, 035705
Keyword [en]
nanorods; magnetic properties; electron paramagnetic resonance; diluted magnetic semiconductors
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-134300DOI: 10.1088/1361-6528/28/3/035705ISI: 000391289300001PubMedID: 27966469OAI: oai:DiVA.org:liu-134300DiVA: diva2:1071703
Note

Funding Agencies|NATO project [SfP 984735]

Available from: 2017-02-06 Created: 2017-02-03 Last updated: 2017-02-06

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