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Magnetic properties of hematite (alpha-Fe2O3) nanoparticles prepared by hydrothermal synthesis method
dc.creator | Tadić, Marin | |
dc.creator | Panjan, Matjaž | |
dc.creator | Damnjanović, Vesna | |
dc.creator | Milošević, Irena | |
dc.date.accessioned | 2018-03-01T15:29:58Z | |
dc.date.available | 2018-03-01T15:29:58Z | |
dc.date.issued | 2014 | |
dc.identifier.issn | 0169-4332 | |
dc.identifier.issn | 1873-5584 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/225 | |
dc.description.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. | en |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45015/RS// | |
dc.relation | Ministry of Higher Education, Science and Technology of the Republic of Slovenia within the National Research Program | |
dc.rights | restrictedAccess | en |
dc.source | Applied Surface Science | en |
dc.subject | Iron oxide | en |
dc.subject | Hematite (alpha-Fe2O3) | en |
dc.subject | Hydrothermal synthesis | en |
dc.subject | Superparamagnetism (SPION) | en |
dc.subject | Surface effects | en |
dc.title | Magnetic properties of hematite (alpha-Fe2O3) nanoparticles prepared by hydrothermal synthesis method | en |
dc.type | article | en |
dcterms.abstract | Тадић Марин; Дамњановиц, Весна; Милосевиц, Ирена; Пањан, Матјаз; | |
dc.citation.volume | 320 | |
dc.citation.spage | 183 | |
dc.citation.epage | 187 | |
dc.identifier.wos | 000345399900021 | |
dc.identifier.doi | 10.1016/j.apsusc.2014.08.103 | |
dc.citation.rank | M21 | |
dc.type.version | publishedVersion | |
dc.identifier.scopus | 2-s2.0-84908221642 |
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