TY  - JOUR
AU  - Vranješ, Mila
AU  - Konstantinović, Zorica
AU  - Pomar, Alberto
AU  - Kuljanin-Jakovljević, Jadranka Ž.
AU  - Stoiljković, Milovan
AU  - Nedeljković, Jovan
AU  - Šaponjić, Zoran
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5851
AB  - Hydrothermal synthetic route for synthesis of Ni2+ doped TiO2 nanocrystals showing room temperature ferromagnetism, using dispersion of titania nanotubes in the presence of Ni2+ ions at different pHs as precursors, is reported. Morphologies of tubular precursors and Ni2+ doped TiO2 nanocrystals were characterized by transmission electron microscopy. Titania nanotubes have outer diameter of about 10 nm while the length varies widely even reaching few hundred nanometers. Ni2+ doped TiO2 nanoparticles synthesized at pH 3 have polygonal shape and dimension of about 20 nm. Transmission electron microscopy analysis revealed presence of mixed shapes (polygonal and rod like) in the sample of Ni2+ doped TiO2 nanoparticles synthesized at pH 5. X-ray diffraction analysis of resultant powder and selected area electron diffraction pattern confirmed the anatase crystal phase of Ni2+ doped TiO2 nanoparticles independently of dopant concentrations (0.09, 0.25, 0.86, 1.48 and 1.80 at%), followed by slight changes of their microstructural parameters. Reflection spectra of Ni2+ doped TiO2 nanoparticles revealed their altered optical properties in comparison to undoped TiO2 nanoparticles. Room temperature ferromagnetic ordering with saturation magnetic moment in the range of 10(-3)-5 x 10(-2) mu B per Ni atom was observed for all measured films made of Ni2+ doped TiO2 nanoparticles. (C) 2013 Elsevier B. V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Room-temperature ferromagnetism in Ni2+ doped TiO2 nanocrystals synthesized from nanotubular precursors
VL  - 589
SP  - 42
EP  - 47
DO  - 10.1016/j.jallcom.2013.11.163
ER  - 

@article{
author = "Vranješ, Mila and Konstantinović, Zorica and Pomar, Alberto and Kuljanin-Jakovljević, Jadranka Ž. and Stoiljković, Milovan and Nedeljković, Jovan and Šaponjić, Zoran",
year = "2014",
abstract = "Hydrothermal synthetic route for synthesis of Ni2+ doped TiO2 nanocrystals showing room temperature ferromagnetism, using dispersion of titania nanotubes in the presence of Ni2+ ions at different pHs as precursors, is reported. Morphologies of tubular precursors and Ni2+ doped TiO2 nanocrystals were characterized by transmission electron microscopy. Titania nanotubes have outer diameter of about 10 nm while the length varies widely even reaching few hundred nanometers. Ni2+ doped TiO2 nanoparticles synthesized at pH 3 have polygonal shape and dimension of about 20 nm. Transmission electron microscopy analysis revealed presence of mixed shapes (polygonal and rod like) in the sample of Ni2+ doped TiO2 nanoparticles synthesized at pH 5. X-ray diffraction analysis of resultant powder and selected area electron diffraction pattern confirmed the anatase crystal phase of Ni2+ doped TiO2 nanoparticles independently of dopant concentrations (0.09, 0.25, 0.86, 1.48 and 1.80 at%), followed by slight changes of their microstructural parameters. Reflection spectra of Ni2+ doped TiO2 nanoparticles revealed their altered optical properties in comparison to undoped TiO2 nanoparticles. Room temperature ferromagnetic ordering with saturation magnetic moment in the range of 10(-3)-5 x 10(-2) mu B per Ni atom was observed for all measured films made of Ni2+ doped TiO2 nanoparticles. (C) 2013 Elsevier B. V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Room-temperature ferromagnetism in Ni2+ doped TiO2 nanocrystals synthesized from nanotubular precursors",
volume = "589",
pages = "42-47",
doi = "10.1016/j.jallcom.2013.11.163"
}

Vranješ, M., Konstantinović, Z., Pomar, A., Kuljanin-Jakovljević, J. Ž., Stoiljković, M., Nedeljković, J.,& Šaponjić, Z.. (2014). Room-temperature ferromagnetism in Ni2+ doped TiO2 nanocrystals synthesized from nanotubular precursors. in Journal of Alloys and Compounds, 589, 42-47.
https://doi.org/10.1016/j.jallcom.2013.11.163

Vranješ M, Konstantinović Z, Pomar A, Kuljanin-Jakovljević JŽ, Stoiljković M, Nedeljković J, Šaponjić Z. Room-temperature ferromagnetism in Ni2+ doped TiO2 nanocrystals synthesized from nanotubular precursors. in Journal of Alloys and Compounds. 2014;589:42-47.
doi:10.1016/j.jallcom.2013.11.163 .

Vranješ, Mila, Konstantinović, Zorica, Pomar, Alberto, Kuljanin-Jakovljević, Jadranka Ž., Stoiljković, Milovan, Nedeljković, Jovan, Šaponjić, Zoran, "Room-temperature ferromagnetism in Ni2+ doped TiO2 nanocrystals synthesized from nanotubular precursors" in Journal of Alloys and Compounds, 589 (2014):42-47,
https://doi.org/10.1016/j.jallcom.2013.11.163 . .

TY  - JOUR
AU  - Vranješ, Mila
AU  - Kuljanin-Jakovljević, Jadranka Ž.
AU  - Ahrenkiel, Scott Phillip
AU  - Zeković, Ivana Lj.
AU  - Mitrić, Miodrag
AU  - Šaponjić, Zoran
AU  - Nedeljković, Jovan
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5657
AB  - We report on a new synthetic route for synthesis of Sm3+ doped TiO2 nanocrystals by shape transformation of hydrothermally treated titania nanotubes in the presence of Sm3+ ions. Shape and size of Sm3+ doped TiO2 nanocrystals were characterized by transmission electron microscopy. An average size of polyhedral nanocrystals mainly of square/rectangular shape varied between 12 and 14 nm. X-ray diffraction analysis of resultant powder revealed the anatase crystal phase of Sm3+ doped TiO2 nanocrystals independently of the amount of dopant. Room-temperature photoluminescence observed in the orange-red spectral region, which is associated with (4)G(5/2)- GT H-6(J) (J=5/2, 7/2 and 9/2) f-f transitions of the Sm3+ in the 4f(5) configuration after band-to-band excitation, confirmed energy transfer in Sm3+ doped TiO2 nanocrystals. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Journal of Luminescence
T1  - Sm3+ doped TiO2 nanoparticles synthesized from nanotubular precursors-luminescent and structural properties
VL  - 143
SP  - 453
EP  - 458
DO  - 10.1016/j.jlumin.2013.05.022
ER  - 

@article{
author = "Vranješ, Mila and Kuljanin-Jakovljević, Jadranka Ž. and Ahrenkiel, Scott Phillip and Zeković, Ivana Lj. and Mitrić, Miodrag and Šaponjić, Zoran and Nedeljković, Jovan",
year = "2013",
abstract = "We report on a new synthetic route for synthesis of Sm3+ doped TiO2 nanocrystals by shape transformation of hydrothermally treated titania nanotubes in the presence of Sm3+ ions. Shape and size of Sm3+ doped TiO2 nanocrystals were characterized by transmission electron microscopy. An average size of polyhedral nanocrystals mainly of square/rectangular shape varied between 12 and 14 nm. X-ray diffraction analysis of resultant powder revealed the anatase crystal phase of Sm3+ doped TiO2 nanocrystals independently of the amount of dopant. Room-temperature photoluminescence observed in the orange-red spectral region, which is associated with (4)G(5/2)- GT H-6(J) (J=5/2, 7/2 and 9/2) f-f transitions of the Sm3+ in the 4f(5) configuration after band-to-band excitation, confirmed energy transfer in Sm3+ doped TiO2 nanocrystals. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Journal of Luminescence",
title = "Sm3+ doped TiO2 nanoparticles synthesized from nanotubular precursors-luminescent and structural properties",
volume = "143",
pages = "453-458",
doi = "10.1016/j.jlumin.2013.05.022"
}

Vranješ, M., Kuljanin-Jakovljević, J. Ž., Ahrenkiel, S. P., Zeković, I. Lj., Mitrić, M., Šaponjić, Z.,& Nedeljković, J.. (2013). Sm3+ doped TiO2 nanoparticles synthesized from nanotubular precursors-luminescent and structural properties. in Journal of Luminescence, 143, 453-458.
https://doi.org/10.1016/j.jlumin.2013.05.022

Vranješ M, Kuljanin-Jakovljević JŽ, Ahrenkiel SP, Zeković IL, Mitrić M, Šaponjić Z, Nedeljković J. Sm3+ doped TiO2 nanoparticles synthesized from nanotubular precursors-luminescent and structural properties. in Journal of Luminescence. 2013;143:453-458.
doi:10.1016/j.jlumin.2013.05.022 .

Vranješ, Mila, Kuljanin-Jakovljević, Jadranka Ž., Ahrenkiel, Scott Phillip, Zeković, Ivana Lj., Mitrić, Miodrag, Šaponjić, Zoran, Nedeljković, Jovan, "Sm3+ doped TiO2 nanoparticles synthesized from nanotubular precursors-luminescent and structural properties" in Journal of Luminescence, 143 (2013):453-458,
https://doi.org/10.1016/j.jlumin.2013.05.022 . .