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dc.creatorTadić, Marin
dc.creatorPanjan, Matjaž
dc.creatorDamnjanovic, Vesna
dc.creatorMilosevic, Irena
dc.identifier.issn0169-4332 (print)
dc.identifier.issn1873-5584 (electronic)
dc.description.abstractHematite (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.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45015/RS//
dc.relationMinistry of Higher Education, Science and Technology of the Republic of Slovenia within the National Research Program
dc.sourceApplied Surface Scienceen
dc.subjectIron oxideen
dc.subjectHematite (alpha-Fe2O3)en
dc.subjectHydrothermal synthesisen
dc.subjectSuperparamagnetism (SPION)en
dc.subjectSurface effectsen
dc.titleMagnetic properties of hematite (alpha-Fe2O3) nanoparticles prepared by hydrothermal synthesis methoden
dcterms.abstractТадић Марин; Дамњановиц, Весна; Милосевиц, Ирена; Пањан, Матјаз;

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