dc.contributor.authorXu, Xiaoyong
dc.contributor.authorXu, Chunxiang
dc.contributor.authorDai, Jun
dc.contributor.authorHu, Jingguo
dc.contributor.authorLi, Fengji
dc.contributor.authorZhang, Sam
dc.date.accessioned2013-11-01T07:29:36Z
dc.date.available2013-11-01T07:29:36Z
dc.date.copyright2012en_US
dc.date.issued2012
dc.identifier.citationXu, X., Xu, C., Dai, J., Hu, J., Li, F., & Zhang, S. (2012). Size dependence of defect-induced room temperature ferromagnetism in undoped ZnO nanoparticles. The Journal of Physical Chemistry C, 116(15), 8813-8818.en_US
dc.identifier.urihttp://hdl.handle.net/10220/17226
dc.description.abstractWe report the intrinsic room-temperature ferromagnetism in undoped ZnO nanoparticles with different sizes synthesized by a wet chemical method at different temperatures. Electron paramagnetic resonance, X-ray photoelectron spectroscopy, and photoluminescence measurements demonstrate clearly the singly charged oxygen vacancies are the main defects, and the relative occupancy of that decreases with increasing sizes and annealing temperatures. Importantly, a direct correlation between the ferromagnetism and the relative concentration of the singly charged oxygen vacancies is established, which suggests that the singly charged oxygen vacancies play a crucial role in modulating ferromagnetic behaviors. Moreover, the size-dependent ferromagnetism can be manipulated conveniently by changing of the surface–volume ratio, which is in favor of future electronic and spintronic application.en_US
dc.language.isoenen_US
dc.relation.ispartofseriesThe journal of physical chemistry Cen_US
dc.subjectDRNTU::Science::Chemistry::Physical chemistry
dc.titleSize dependence of defect-induced room temperature ferromagnetism in undoped ZnO nanoparticlesen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.identifier.doihttp://dx.doi.org/10.1021/jp3014749


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