Magnetic properties of hematite (alpha-Fe2O3) nanoparticles prepared by hydrothermal synthesis method
Apstrakt
Hematite (alpha-Fe2O3) nanoparticles are successfully synthesized by using the hydrothermal synthesis method. An X-ray powder diffraction (XRPD) of the sample shows formation of the nanocrystalline alpha-Fe2O3 phase. A transmission electron microscopy (TEM) measurements show spherical morphology of the hematite nanoparticles and narrow size distribution. An average hematite nanoparticle size is estimated to be about 8 nm by TEM and XRD. Magnetic properties were measured using a superconducting quantum interference device (SQUID) magnetometry. Investigation of the magnetic properties of hematite nanoparticles showed a divergence between field-cooled (FC) and zero-field-cooled (ZFC) magnetization curves below T-irr =103 K (irreversibility temperature). The ZFC magnetization curve showed maximum at T-B = 52 K (blocking temperature). The sample did not exhibit the Morin transition. The M(H) (magnetization versus magnetic field) dependence at 300 K showed properties of superparamagnetic iro...n oxide nanoparticles (SPION). The M(H) data were successfully fitted by the Langevin function and magnetic moment,up = 657 tu and diameter d= 8.1 nm were determined. Furthermore, magnetic measurements showed high magnetization at room temperature (M-S =3.98 emu/g), which is desirable for application in spintronics and biomedicine. Core-shell structure of the nanoparticles was used to describe high magnetization of the hematite nanoparticles. (C) 2014 Elsevier B.V. All rights reserved.
Ključne reči:
Iron oxide / Hematite (alpha-Fe2O3) / Hydrothermal synthesis / Superparamagnetism (SPION) / Surface effectsIzvor:
Applied Surface Science, 2014, 320, 183-187Finansiranje / projekti:
- Magnetni i radionuklidima obeleženi nanostrukturni materijali za primene u medicini (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45015)
- Ministry of Higher Education, Science and Technology of the Republic of Slovenia within the National Research Program
DOI: 10.1016/j.apsusc.2014.08.103
ISSN: 0169-4332; 1873-5584
WoS: 000345399900021
Scopus: 2-s2.0-84908221642
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Tadić, Marin AU - Panjan, Matjaž AU - Damnjanović, Vesna AU - Milošević, Irena PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/225 AB - Hematite (alpha-Fe2O3) nanoparticles are successfully synthesized by using the hydrothermal synthesis method. An X-ray powder diffraction (XRPD) of the sample shows formation of the nanocrystalline alpha-Fe2O3 phase. A transmission electron microscopy (TEM) measurements show spherical morphology of the hematite nanoparticles and narrow size distribution. An average hematite nanoparticle size is estimated to be about 8 nm by TEM and XRD. Magnetic properties were measured using a superconducting quantum interference device (SQUID) magnetometry. Investigation of the magnetic properties of hematite nanoparticles showed a divergence between field-cooled (FC) and zero-field-cooled (ZFC) magnetization curves below T-irr =103 K (irreversibility temperature). The ZFC magnetization curve showed maximum at T-B = 52 K (blocking temperature). The sample did not exhibit the Morin transition. The M(H) (magnetization versus magnetic field) dependence at 300 K showed properties of superparamagnetic iron oxide nanoparticles (SPION). The M(H) data were successfully fitted by the Langevin function and magnetic moment,up = 657 tu and diameter d= 8.1 nm were determined. Furthermore, magnetic measurements showed high magnetization at room temperature (M-S =3.98 emu/g), which is desirable for application in spintronics and biomedicine. Core-shell structure of the nanoparticles was used to describe high magnetization of the hematite nanoparticles. (C) 2014 Elsevier B.V. All rights reserved. T2 - Applied Surface Science T1 - Magnetic properties of hematite (alpha-Fe2O3) nanoparticles prepared by hydrothermal synthesis method VL - 320 SP - 183 EP - 187 DO - 10.1016/j.apsusc.2014.08.103 ER -
@article{ author = "Tadić, Marin and Panjan, Matjaž and Damnjanović, Vesna and Milošević, Irena", year = "2014", abstract = "Hematite (alpha-Fe2O3) nanoparticles are successfully synthesized by using the hydrothermal synthesis method. An X-ray powder diffraction (XRPD) of the sample shows formation of the nanocrystalline alpha-Fe2O3 phase. A transmission electron microscopy (TEM) measurements show spherical morphology of the hematite nanoparticles and narrow size distribution. An average hematite nanoparticle size is estimated to be about 8 nm by TEM and XRD. Magnetic properties were measured using a superconducting quantum interference device (SQUID) magnetometry. Investigation of the magnetic properties of hematite nanoparticles showed a divergence between field-cooled (FC) and zero-field-cooled (ZFC) magnetization curves below T-irr =103 K (irreversibility temperature). The ZFC magnetization curve showed maximum at T-B = 52 K (blocking temperature). The sample did not exhibit the Morin transition. The M(H) (magnetization versus magnetic field) dependence at 300 K showed properties of superparamagnetic iron oxide nanoparticles (SPION). The M(H) data were successfully fitted by the Langevin function and magnetic moment,up = 657 tu and diameter d= 8.1 nm were determined. Furthermore, magnetic measurements showed high magnetization at room temperature (M-S =3.98 emu/g), which is desirable for application in spintronics and biomedicine. Core-shell structure of the nanoparticles was used to describe high magnetization of the hematite nanoparticles. (C) 2014 Elsevier B.V. All rights reserved.", journal = "Applied Surface Science", title = "Magnetic properties of hematite (alpha-Fe2O3) nanoparticles prepared by hydrothermal synthesis method", volume = "320", pages = "183-187", doi = "10.1016/j.apsusc.2014.08.103" }
Tadić, M., Panjan, M., Damnjanović, V.,& Milošević, I.. (2014). Magnetic properties of hematite (alpha-Fe2O3) nanoparticles prepared by hydrothermal synthesis method. in Applied Surface Science, 320, 183-187. https://doi.org/10.1016/j.apsusc.2014.08.103
Tadić M, Panjan M, Damnjanović V, Milošević I. Magnetic properties of hematite (alpha-Fe2O3) nanoparticles prepared by hydrothermal synthesis method. in Applied Surface Science. 2014;320:183-187. doi:10.1016/j.apsusc.2014.08.103 .
Tadić, Marin, Panjan, Matjaž, Damnjanović, Vesna, Milošević, Irena, "Magnetic properties of hematite (alpha-Fe2O3) nanoparticles prepared by hydrothermal synthesis method" in Applied Surface Science, 320 (2014):183-187, https://doi.org/10.1016/j.apsusc.2014.08.103 . .