Magnetic properties of ultrasmall iron-oxide nanoparticles
Само за регистроване кориснике
2014
Аутори
Milivojević, DušanBabić-Stojić, Branka S.
Jokanović, Vukoman R.
Jagličić, Zvonko
Makovec, Darko
Jović, Nataša G.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The work presents structural and magnetic properties of ultrasmall magnetic nanoparticles consisting of inorganic iron oxide core and organic ester shell, dispersed in an organic fluid, synthesized via polyol route. The structure analysis shows that nanoparticles are crystalline, less than 3 nm in size, mutually clearly separated. The magnetic properties are in accordance with the size of the nanoparticles and do not indicate interparticle interactions. The particles show pure superparamagnetic behavior with very low blocking temperature. ZFCFC bifurcation and ac susceptibility peaks are at temperatures T-B LT 12 K. The properties of fluid were compared with dried powder sample. Drying of fluid brings about interactions between the magnetic nanoparticles that considerably affect spin dynamics of the particles. The surface of nanoparticles has a significant influence on their behavior. The Mssbauer parameters indicate existence of gamma-Fe2O3 core and non-stoichiometric surface layer. M...agnetic field dependent magnetization analysis suggests smaller apparent size of the particles d(0) = 0.56 nm. High magnetic anisotropy due to surface layer anisotropy was measured to be of the order 10(6) erg/cm(3) that is two orders of magnitude higher than that in bulk material. (C) 2014 Elsevier B.V. All rights reserved.
Кључне речи:
Nanostructured materials / Magnetic fluids / Magnetic measurements / Ultrasmall superparamagnetic iron oxide / USPIOИзвор:
Journal of Alloys and Compounds, 2014, 595, 153-157Финансирање / пројекти:
- Хемијско и структурно дизајнирање наноматеријала за примену у медицини и инжењерству ткива (RS-MESTD-Basic Research (BR or ON)-172026)
DOI: 10.1016/j.jallcom.2014.01.112
ISSN: 0925-8388; 1873-4669
WoS: 000332396900024
Scopus: 2-s2.0-84894113900
Институција/група
VinčaTY - JOUR AU - Milivojević, Dušan AU - Babić-Stojić, Branka S. AU - Jokanović, Vukoman R. AU - Jagličić, Zvonko AU - Makovec, Darko AU - Jović, Nataša G. PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5912 AB - The work presents structural and magnetic properties of ultrasmall magnetic nanoparticles consisting of inorganic iron oxide core and organic ester shell, dispersed in an organic fluid, synthesized via polyol route. The structure analysis shows that nanoparticles are crystalline, less than 3 nm in size, mutually clearly separated. The magnetic properties are in accordance with the size of the nanoparticles and do not indicate interparticle interactions. The particles show pure superparamagnetic behavior with very low blocking temperature. ZFCFC bifurcation and ac susceptibility peaks are at temperatures T-B LT 12 K. The properties of fluid were compared with dried powder sample. Drying of fluid brings about interactions between the magnetic nanoparticles that considerably affect spin dynamics of the particles. The surface of nanoparticles has a significant influence on their behavior. The Mssbauer parameters indicate existence of gamma-Fe2O3 core and non-stoichiometric surface layer. Magnetic field dependent magnetization analysis suggests smaller apparent size of the particles d(0) = 0.56 nm. High magnetic anisotropy due to surface layer anisotropy was measured to be of the order 10(6) erg/cm(3) that is two orders of magnitude higher than that in bulk material. (C) 2014 Elsevier B.V. All rights reserved. T2 - Journal of Alloys and Compounds T1 - Magnetic properties of ultrasmall iron-oxide nanoparticles VL - 595 SP - 153 EP - 157 DO - 10.1016/j.jallcom.2014.01.112 ER -
@article{ author = "Milivojević, Dušan and Babić-Stojić, Branka S. and Jokanović, Vukoman R. and Jagličić, Zvonko and Makovec, Darko and Jović, Nataša G.", year = "2014", abstract = "The work presents structural and magnetic properties of ultrasmall magnetic nanoparticles consisting of inorganic iron oxide core and organic ester shell, dispersed in an organic fluid, synthesized via polyol route. The structure analysis shows that nanoparticles are crystalline, less than 3 nm in size, mutually clearly separated. The magnetic properties are in accordance with the size of the nanoparticles and do not indicate interparticle interactions. The particles show pure superparamagnetic behavior with very low blocking temperature. ZFCFC bifurcation and ac susceptibility peaks are at temperatures T-B LT 12 K. The properties of fluid were compared with dried powder sample. Drying of fluid brings about interactions between the magnetic nanoparticles that considerably affect spin dynamics of the particles. The surface of nanoparticles has a significant influence on their behavior. The Mssbauer parameters indicate existence of gamma-Fe2O3 core and non-stoichiometric surface layer. Magnetic field dependent magnetization analysis suggests smaller apparent size of the particles d(0) = 0.56 nm. High magnetic anisotropy due to surface layer anisotropy was measured to be of the order 10(6) erg/cm(3) that is two orders of magnitude higher than that in bulk material. (C) 2014 Elsevier B.V. All rights reserved.", journal = "Journal of Alloys and Compounds", title = "Magnetic properties of ultrasmall iron-oxide nanoparticles", volume = "595", pages = "153-157", doi = "10.1016/j.jallcom.2014.01.112" }
Milivojević, D., Babić-Stojić, B. S., Jokanović, V. R., Jagličić, Z., Makovec, D.,& Jović, N. G.. (2014). Magnetic properties of ultrasmall iron-oxide nanoparticles. in Journal of Alloys and Compounds, 595, 153-157. https://doi.org/10.1016/j.jallcom.2014.01.112
Milivojević D, Babić-Stojić BS, Jokanović VR, Jagličić Z, Makovec D, Jović NG. Magnetic properties of ultrasmall iron-oxide nanoparticles. in Journal of Alloys and Compounds. 2014;595:153-157. doi:10.1016/j.jallcom.2014.01.112 .
Milivojević, Dušan, Babić-Stojić, Branka S., Jokanović, Vukoman R., Jagličić, Zvonko, Makovec, Darko, Jović, Nataša G., "Magnetic properties of ultrasmall iron-oxide nanoparticles" in Journal of Alloys and Compounds, 595 (2014):153-157, https://doi.org/10.1016/j.jallcom.2014.01.112 . .