Magnetic properties of nanostructured SiOo2:Eu3+ powders

2006
Authors
Spasojević, Vojislav
Dramićanin, Miroslav

Jokanović, Vukoman

Andrić, Željka
Blanuša, Jovan

Kusigerski, Vladan

Mitrić, Miodrag

Tadić, Marin

Kapičić, Ana
Article (Published version)
Metadata
Show full item recordAbstract
Eu-doped silica nanoparticles with different concentrations of europium (3% 6%and 15at.%) 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 behavior typical for Eu3+ ions, with a plateau below 60K, 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 40K, a contribution of paramagnetic impurities obeying the Curie law was observed. Heat treatment of the powders at 823K and 1073K increased the magnetic susceptibility. The appearance of a small peak at 70K indicated the presence of small quantities of ...ferromagnetic EuO in the powders after heating.
Keywords:
magnetic properties / nanoparticles / rare earths / silica / light scatteringSource:
Journal of the Serbian Chemical Society, 2006, 71, 4, 412-420Publisher:
- Belgrade : Serbian Chemical Society
DOI: 10.2298/JSC0604413S
ISSN: 0352-5139; 1820-7421 (Online)
WoS: 000238365500010
Scopus: 2-s2.0-33746447140
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Spasojević, Vojislav AU - Dramićanin, Miroslav AU - Jokanović, Vukoman AU - Andrić, Željka AU - Blanuša, Jovan AU - Kusigerski, Vladan AU - Mitrić, Miodrag AU - Tadić, Marin AU - Kapičić, Ana PY - 2006 UR - https://dais.sanu.ac.rs/123456789/280 AB - Eu-doped silica nanoparticles with different concentrations of europium (3% 6%and 15at.%) 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 behavior typical for Eu3+ ions, with a plateau below 60K, 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 40K, a contribution of paramagnetic impurities obeying the Curie law was observed. Heat treatment of the powders at 823K and 1073K increased the magnetic susceptibility. The appearance of a small peak at 70K indicated the presence of small quantities of ferromagnetic EuO in the powders after heating. PB - Belgrade : Serbian Chemical Society T2 - Journal of the Serbian Chemical Society T1 - Magnetic properties of nanostructured SiOo2:Eu3+ powders SP - 412 EP - 420 VL - 71 IS - 4 DO - 10.2298/JSC0604413S UR - https://hdl.handle.net/21.15107/rcub_dais_280 ER -
@article{ author = "Spasojević, Vojislav and Dramićanin, Miroslav and Jokanović, Vukoman and Andrić, Željka and Blanuša, Jovan and Kusigerski, Vladan and Mitrić, Miodrag and Tadić, Marin and Kapičić, Ana", year = "2006", abstract = "Eu-doped silica nanoparticles with different concentrations of europium (3% 6%and 15at.%) 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 behavior typical for Eu3+ ions, with a plateau below 60K, 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 40K, a contribution of paramagnetic impurities obeying the Curie law was observed. Heat treatment of the powders at 823K and 1073K increased the magnetic susceptibility. The appearance of a small peak at 70K indicated the presence of small quantities of ferromagnetic EuO in the powders after heating.", publisher = "Belgrade : Serbian Chemical Society", journal = "Journal of the Serbian Chemical Society", title = "Magnetic properties of nanostructured SiOo2:Eu3+ powders", pages = "412-420", volume = "71", number = "4", doi = "10.2298/JSC0604413S", url = "https://hdl.handle.net/21.15107/rcub_dais_280" }
Spasojević, V., Dramićanin, M., Jokanović, V., Andrić, Ž., Blanuša, J., Kusigerski, V., Mitrić, M., Tadić, M.,& Kapičić, A.. (2006). Magnetic properties of nanostructured SiOo2:Eu3+ powders. in Journal of the Serbian Chemical Society Belgrade : Serbian Chemical Society., 71(4), 412-420. https://doi.org/10.2298/JSC0604413S https://hdl.handle.net/21.15107/rcub_dais_280
Spasojević V, Dramićanin M, Jokanović V, Andrić Ž, Blanuša J, Kusigerski V, Mitrić M, Tadić M, Kapičić A. Magnetic properties of nanostructured SiOo2:Eu3+ powders. in Journal of the Serbian Chemical Society. 2006;71(4):412-420. doi:10.2298/JSC0604413S https://hdl.handle.net/21.15107/rcub_dais_280 .
Spasojević, Vojislav, Dramićanin, Miroslav, Jokanović, Vukoman, Andrić, Željka, Blanuša, Jovan, Kusigerski, Vladan, Mitrić, Miodrag, Tadić, Marin, Kapičić, Ana, "Magnetic properties of nanostructured SiOo2:Eu3+ powders" in Journal of the Serbian Chemical Society, 71, no. 4 (2006):412-420, https://doi.org/10.2298/JSC0604413S ., https://hdl.handle.net/21.15107/rcub_dais_280 .