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Magnetic properties of nanostructured SiO2: Eu3+ powders
dc.creator | Spasojević, Vojislav | |
dc.creator | Dramićanin, Miroslav | |
dc.creator | Jokanović, Vukoman R. | |
dc.creator | Andrić, Željka | |
dc.creator | Blanuša, Jovan | |
dc.creator | Kusigerski, Vladan | |
dc.creator | Mitrić, Miodrag | |
dc.creator | Tadić, Marin | |
dc.creator | Kapidžić, Ana | |
dc.date.accessioned | 2018-03-01T19:49:58Z | |
dc.date.available | 2018-03-01T19:49:58Z | |
dc.date.issued | 2006 | |
dc.identifier.issn | 0352-5139 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/3028 | |
dc.description.abstract | Eu-doped silica nanoparticles with different concentrations of europium (3 %, 6 % and 15 at. %) were prepared by a hydrothermal procedure. Light scattering measurements of the silica colloids as well as TEM microscopy, revealed a narrow size distribution of the particles, ranging from 5 to 10 nm. X-Ray diffraction showed that all the powders were amorphous. Magnetic susceptibility vs. temperature measurements showed a behaviour typical for Eu3+ ions, with a plateau below 60 K, and an increase of the mass susceptibility with Eu concentration. The splitting of zero-field cooled (ZFC) and field-coled (FC) susceptibility branches increased with the europium concentration, indicating the presence of interparticle interactions. At temperatures below 40 K, a contribution of paramagnetic impurities obeying the Curic law was observed. Heat treatment of the powders at 823 K and 1073 K increased the magnetic susceptibility. The appearance of a small peak at 70 K indicated the presence of small quantities of ferromagnetic EuO in the powders after heating. | en |
dc.rights | openAccess | en |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Journal of the Serbian Chemical Society | en |
dc.subject | magnetic properties | en |
dc.subject | nanoparticles | en |
dc.subject | rare earth | en |
dc.subject | silica | en |
dc.subject | light scattering | en |
dc.title | Magnetic properties of nanostructured SiO2: Eu3+ powders | en |
dc.type | article | en |
dc.rights.license | BY-NC-ND | |
dcterms.abstract | Aндриц, З; Капициц, A; Спасојевић Војислав; Драмићанин Мирослав; Јокановић Вукоман Р.; Блануша Јован; Кусигерски Владан; Митрић Миодраг; Тадић Марин; | |
dc.citation.volume | 71 | |
dc.citation.issue | 4 | |
dc.citation.spage | 413 | |
dc.citation.epage | 420 | |
dc.identifier.wos | 000238365500010 | |
dc.identifier.doi | 10.2298/JSC0604413S | |
dc.citation.rank | M23 | |
dc.type.version | publishedVersion | |
dc.identifier.scopus | 2-s2.0-33746447140 | |
dc.identifier.fulltext | https://vinar.vin.bg.ac.rs//bitstream/id/12365/3024.pdf |