B. Hadžić

University of Belgrade

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N. Romčević

Institute of Physics Belgrade

M. Romčević

Institute of Physics Belgrade

W. Dobrowolski

Polish Academy of Sciences

J. Trajić

University of Belgrade

I. Kuryliszyn‐Kudelska

Polish Academy of Sciences

Daniel Sibera

West Pomeranian University of Technology

Urszula Narkiewicz

West Pomeranian University of Technology

Zorica Lazarević

University of Belgrade

Martina Gilić

Institute of Physics Belgrade

M. Petrović

University of Belgrade

Cooperative Institutions

University of Belgrade

Institute of Physics Belgrade

University of Novi Sad

Vinča Institute of Nuclear Sciences

Polish Academy of Sciences

Institute of Physics

Czech Academy of Sciences, Institute of Physics

Institute of Economic Sciences

Vienna Institute for Nature Conservation & Analyses

Zemun Hospital

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Superparamagnetic and ferrimagnetic behavior of nanocrystalline ZnO(MnO)

Physica E Low-dimensional Systems and Nanostructures (2017)

I. Kuryliszyn‐Kudelska W. Dobrowolski Μ. Arciszewska N. Romčević M. Romčević

Ferrimagnetism

Superparamagnetism

Nanocrystalline material

Characterization

10.1016/j.physe.2017.12.008

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Citations (6)

CCDC 978769: Experimental Crystal Structure Determination

The Cambridge Structural Database (2015)

Mirjana M. Radanović Miodrag G. Jelić N. Romčević Nikos Boukos Ljiljana S. Vojinović‐Ješić

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cc11vh6l

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Transition metals in ZnO nanocrystals: Magnetic and structural properties

Science of Sintering (2013)

I. Kuryliszyn‐Kudelska W. Dobrowolski Μ. Arciszewska N. Romčević M. Romčević

Currently, wide-gap ZnO nanoparticles bear important potential application in electro-optical devices, transparent ultraviolet protection films, and spintronic devices. We have studied the magnetic properties of nanocrystals of ZnO(Fe, Co, Mn) prepared by two methods of synthesis. We have used the microwave assisted hydrothermal synthesis and traditional wet chemistry method followed by calcination. The detailed structural characterization was performed by means of X-ray diffraction and micro-Raman spectroscopy measurements. The morphology of the samples was studied by means of SEM and TEM microscopy. The results of systematic measurements of AC magnetic susceptibility as a function of temperature and frequency as well as SQUID magnetization are presented. The SQUID magnetization measurements revealed a clear bifurcation of the FC and ZFC plots. Such behavior suggested superparamagnetic behavior above the blocking temperature. The dynamic magnetic measurements were performed at small AC magnetic field with amplitude not exceeding 5 Oe and different frequency values (from 7 Hz to 9970 Hz). For ZnO(Fe) and ZnO(Mn), the AC susceptibility maxima has been found for in-phase susceptibility Re(?) and for out of phase susceptibility Im(?). We analyzed the observed frequency dependence of the peak temperature in the AC susceptibility curve using the empirical parameter ? that is a quantitative measure of the frequency shift and is given by the relative shift of the peak temperature per decade shift in frequency, as well as Vogel- Fulcher law. We observed two different types of magnetic behavior, spin-glasslike behavior or superparamagnetic behavior, depending on the synthesis process. For ZnO(Co) nanocrystalline samples high temperature Curie-Weiss behavior in AC magnetic susceptibility was observed. We observed that the determined negative values of the Curie- Weiss temperature ? depend strongly on the nominal content of cobalt oxide. It was shown that for calcination method the values of ? increase with the increase of magnetic ion content indicating enhancement of predominance of antiferromagnetic interactions. For hydrothermal method the opposite effect was observed indicating the breakdown of predominance of aniferromagnetic coupling with the increase of nominal magnetic ion content. This paper gives an in-depth discussion of the structural and magnetic properties of ZnO nanocrystals in addition to the technological issues such as different methods of wet chemical synthesis.

Superparamagnetism

10.2298/sos1301031k

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Citations (15)

Laser power influence on Raman spectra of ZnO(Co) nanoparticles

Journal of Physics and Chemistry of Solids (2015)

B. Hadžić N. Romčević Daniel Sibera Urszula Narkiewicz I. Kuryliszyn‐Kudelska

Nanocrystalline material

Power density

10.1016/j.jpcs.2015.12.008

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Citations (19)

Magnetic properties of ZnO(Co) nanocrystals

Journal of Alloys and Compounds (2013)

I. Kuryliszyn‐Kudelska B. Hadžić Daniel Sibera M. Romčević N. Romčević

10.1016/j.jallcom.2013.01.178

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Citations (13)

Far-infrared study of impurity local modes in Ni-doped PbTe

Journal of Alloys and Compounds (2007)

N. Romčević J. Trajić Т. А. Кузнецова M. Romčević B. Hadžić

Crystal (programming language)

10.1016/j.jallcom.2006.09.164

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Citations (24)

Raman spectra of ZnGeAs2 highly doped with Mn

Materials Research Bulletin (2014)

M. Romčević Ł. Kilański N. Romčević B. Hadžić W. Dobrowolski

Lattice (music)

Crystal (programming language)

10.1016/j.materresbull.2014.07.042

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Citations (4)

Effect of laser heating on partial decomposition of ZnCo2O4 nanoparticles: Raman study

Optical Materials (2024)

B. Gavrić M. Romčević I. Kuryliszyn‐Kudelska W. Dobrowolski Urszula Narkiewicz

10.1016/j.optmat.2024.116238

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Magnetic properties of nanocrystalline ZnO doped with MnO and CoO

Journal of Physics Conference Series (2010)

I. Kuryliszyn‐Kudelska W. Dobrowolski Ł. Kilański B. Hadžić N. Romčević

We have studied the magnetic properties of ZnO nanocrystals doped with MnO and CoO in the wide range of magnetic dopant (from 5 to 95 wt. %), synthetized by wet chemical method. The samples were characterized by means of XRD and micro-Raman spectroscopy. The results of systematic measurements of magnetic susceptibility as a function of temperature and frequency as well as SQUID magnetization are presented. We observed different types of magnetic behavior. ZnO nanocrystals doped with CoO demonstrate Curie-Weiss behavior at higher temperatures. For samples doped with MnO, we observed the superparamagnetism above the blocking temperature.

Nanocrystalline material

Superparamagnetism

Atmospheric temperature range

10.1088/1742-6596/200/7/072058

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Citations (7)

Nanocrystalline ZnO Doped with Fe₂O₃- Magnetic and Structural Properties

Acta Physica Polonica A (2011)

I. Kuryliszyn‐Kudelska B. Hadžić Daniel Sibera Ł. Kilański N. Romčević

We have studied the magnetic properties of ZnO nanocrystals doped with Fe2O3 in the magnetic dopant range from 5 to 70 wt%.The nanocrystals were synthesized by wet chemical method.The detailed structural characterization was performed by means of X-ray diffraction and micro-Raman spectroscopy measurements.The results of systematic measurements of magnetic AC susceptibility as a function of temperature and frequency are presented.We observed different types of magnetic behavior.For ZnO samples doped with low content of Fe2O3, the results of low-field AC susceptibility are satisfactorily explained by superparamagnetic model including inter-particle interactions.With the increase of magnetic Fe2O3 content, the spin-glass-like behavior is observed.

Nanocrystalline material

10.12693/aphyspola.119.689

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Citations (5)