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dc.creatorKuljanin-Jakovljević, Jadranka Ž.
dc.creatorRadoičić, Marija B.
dc.creatorRadetic, T.
dc.creatorKonstantinovic, Z.
dc.creatorŠaponjić, Zoran
dc.creatorNedeljković, Jovan
dc.date.accessioned2018-03-01T21:00:24Z
dc.date.available2018-03-01T21:00:24Z
dc.date.issued2009
dc.identifier.issn1932-7447 (print)
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/3847
dc.description.abstractNew approach for synthesis of Co2+ doped TiO2 nanoparticles showing room temperature ferromagnetic behavior, through shape transformation of hydrothermally treated scrolled titania nanotubes in the presence of Co2+ ions is described. The XRD and ICP measurements demonstrated successful incorporation of 0.46 at % Co2+ ions in preserved anatase crystal structure of TiO2 nanoparticles, without presence of Co-oxide Clustering, metallic Co, or Various Co-Ti oxide species. HRTEM measurements revealed that majority of the nanoparticles have polygonal shapes with average dimension of similar to 6-10 nm. Obtained Value of 3.06 eV for band gap energy of Co2+ doped TiO2 nanoparticles explained altered optical properties of TiO2 matrix and indicates narrowing of the electronic properties in respect to the undoped anatase TiO2 nanomaterials. The Co2+ doped TiO2 nanocrystals enabled synthesis of optically transparent film that shows room temperature ferromagnetic ordering with a saturation magnetic moment of 0 25 mu B per Co atom The proposed explanation for room temperature ferromagnetic behavior is based oil the presence of critical amount of oxygen vacancies that mediate interaction between Co2+ spins trapped in the lattice Structure of titania nanoparticles with undercoordinated surface defect sites.en
dc.relationSerbian Ministry of Science and Technological Development [142066], NCEM, Office of Science, Office of Basic Energy Sciences of the US Department of Energy [DE:-AC02-05CH11231], Spanish MEC f
dc.rightsrestrictedAccessen
dc.sourceJournal of Physical Chemistry. Cen
dc.titlePresence of Room Temperature Ferromagnetism in CO2+ Doped TiO2 Nanoparticles Synthesized through Shape Transformationen
dc.typearticleen
dcterms.abstractКуљанин-Јаковљевиц, Ј.; Радетиц, Т.; Радоичић Марија; Константиновиц, З.; Шапоњић, Зоран; Недељковић Јован;
dc.citation.volume113
dc.citation.issue50
dc.citation.spage21029
dc.citation.epage21033
dc.identifier.wos000272560400003
dc.identifier.doi10.1021/jp905042k
dc.citation.rankM21
dc.identifier.scopus2-s2.0-73249136466


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