Magnetic properties of nanostructured SiO2: Eu3+ powders
2006
Аутори
Spasojević, VojislavDramićanin, Miroslav
Jokanović, Vukoman R.
Andrić, Željka
Blanuša, Jovan
Kusigerski, Vladan
Mitrić, Miodrag
Tadić, Marin
Kapidžić, Ana
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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 qu...antities of ferromagnetic EuO in the powders after heating.
Кључне речи:
magnetic properties / nanoparticles / rare earth / silica / light scatteringИзвор:
Journal of the Serbian Chemical Society, 2006, 71, 4, 413-420
DOI: 10.2298/JSC0604413S
ISSN: 0352-5139
WoS: 000238365500010
Scopus: 2-s2.0-33746447140
Колекције
Институција/група
VinčaTY - JOUR AU - Spasojević, Vojislav AU - Dramićanin, Miroslav AU - Jokanović, Vukoman R. AU - Andrić, Željka AU - Blanuša, Jovan AU - Kusigerski, Vladan AU - Mitrić, Miodrag AU - Tadić, Marin AU - Kapidžić, Ana PY - 2006 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3028 AB - 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. T2 - Journal of the Serbian Chemical Society T1 - Magnetic properties of nanostructured SiO2: Eu3+ powders VL - 71 IS - 4 SP - 413 EP - 420 DO - 10.2298/JSC0604413S ER -
@article{ author = "Spasojević, Vojislav and Dramićanin, Miroslav and Jokanović, Vukoman R. and Andrić, Željka and Blanuša, Jovan and Kusigerski, Vladan and Mitrić, Miodrag and Tadić, Marin and Kapidžić, Ana", year = "2006", 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.", journal = "Journal of the Serbian Chemical Society", title = "Magnetic properties of nanostructured SiO2: Eu3+ powders", volume = "71", number = "4", pages = "413-420", doi = "10.2298/JSC0604413S" }
Spasojević, V., Dramićanin, M., Jokanović, V. R., Andrić, Ž., Blanuša, J., Kusigerski, V., Mitrić, M., Tadić, M.,& Kapidžić, A.. (2006). Magnetic properties of nanostructured SiO2: Eu3+ powders. in Journal of the Serbian Chemical Society, 71(4), 413-420. https://doi.org/10.2298/JSC0604413S
Spasojević V, Dramićanin M, Jokanović VR, Andrić Ž, Blanuša J, Kusigerski V, Mitrić M, Tadić M, Kapidžić A. Magnetic properties of nanostructured SiO2: Eu3+ powders. in Journal of the Serbian Chemical Society. 2006;71(4):413-420. doi:10.2298/JSC0604413S .
Spasojević, Vojislav, Dramićanin, Miroslav, Jokanović, Vukoman R., Andrić, Željka, Blanuša, Jovan, Kusigerski, Vladan, Mitrić, Miodrag, Tadić, Marin, Kapidžić, Ana, "Magnetic properties of nanostructured SiO2: Eu3+ powders" in Journal of the Serbian Chemical Society, 71, no. 4 (2006):413-420, https://doi.org/10.2298/JSC0604413S . .