Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf
1 PublikationCrystalline Ni nanoparticles as the origin of ferromagnetism in Ni implanted ZnO crystals
Zhou, S.; Potzger, K.; Zhang, G.; Eichhorn, F.; Skorupa, W.; Helm, M.; Fassbender, J.
Abstract
We report the structural and magnetic properties of ZnO single crystals implanted at 623 K with up to 10 at. % of Ni. As revealed by X-ray diffraction, crystalline fcc-Ni nanoparticles were formed inside ZnO. The magnetic behavior (magnetization with field reversal and with different temperature protocol) of all samples is well explained by a magnetic Ni-nanoparticle system. Although the formation of Ni:ZnO based diluted magnetic semiconductor cannot be ruled out, the major contribution to the magnetic properties stems from crystalline nanoparticles synthesized under these implantation conditions.
Keywords: II-VI semiconductors; magnetic semiconductors; nanostructured materials; superparamagnetism
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Journal of Applied Physics 100(2006)11, 114304
DOI: 10.1063/1.2396763
Cited 54 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-8402
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