Detail publikace

Magnetic Properties of ZnFe2O4 Nanoparticles Synthesized by Starch-Assisted Sol-Gel Auto-combustion Method

YADAV, R. HAVLICA, J. KUŘITKA, I. KOŽÁKOVÁ, Z. PALOU, M. BARTONÍČKOVÁ, E. BOHÁČ, M. FRAJKOROVÁ, F. MÁSILKO, J. HAJDÚCHOVÁ, M. ENEV, V. WASSERBAUER, J.

Originální název

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

In this paper, ZnFe2O4 spinel ferrite nanoparticles with different grain sizes at different annealing temperatures have been synthesized using the starch-assisted sol–gel auto-combustion method. The synthesized nanoparticles were characterized by conventional powder X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, and vibrating sample magnetometer. The X-ray diffraction (XRD) patterns demonstrated that the ZnFe2O4 nanoparticles consist of single-phase spinel structure with crystallite sizes 4.81, 8.72, 12.06, 29.32, and 72.60 nm annealed at 400, 600, 800, 1000, and 1200 ◦C, respectively. Field emission scanning electron microscopy reveals that particles are of spherical morphology at lower annealing temperature and hexagonal-like morphology at higher temperature. An infrared spectroscopy study shows the presence of two principal absorption bands in the frequency range around 525 cm−1 (ν1) and around 350 cm−1 (ν2), which indicate the presence of tetrahedral and octahedral group complexes, respectively, within the spinel ferrite nanoparticles. Raman spectroscopy study also indicated the change in octahedral and tetrahedral site-related Raman modes in zinc ferrite nanoparticles with change of particle size. The nanocrystalline ZnFe2O4 samples (4.81, 8.72, 12.06, 29.32 nm) show ferrimagnetic behavior, and bulk sample (72.60 nm) shows paramagnetic behavior. This change in magnetic behavior is due to change of cation distribution in ZnFe2O4 nanoparticles with decrease of particle size.

Klíčová slova

Spinel ferite; ZnFe2O4; Sol-Gel Auto-Combustion Method; Starch; Magnetic properties

Autoři

YADAV, R.; HAVLICA, J.; KUŘITKA, I.; KOŽÁKOVÁ, Z.; PALOU, M.; BARTONÍČKOVÁ, E.; BOHÁČ, M.; FRAJKOROVÁ, F.; MÁSILKO, J.; HAJDÚCHOVÁ, M.; ENEV, V.; WASSERBAUER, J.

Rok RIV

2014

Vydáno

28. 10. 2014

Nakladatel

Springer

Místo

New York

ISSN

1557-1947

Periodikum

Journal of Superconductivity and Novel Magnetism

Ročník

2015

Číslo

Stát

Spojené státy americké

Strany od

1417

Strany do

1423

Strany počet

URL

http://download.springer.com/static/pdf/991/art%253A10.1007%252Fs10948-014-2870-z.pdf?auth66=1424266486_c349ae594abe82e5fc249c8420c56dd1&ext=.pdf

BibTex

@article{BUT112968,
  author="Raghvendra Singh {Yadav} and Jaromír {Havlica} and Ivo {Kuřitka} and Zuzana {Kožáková} and Martin {Palou} and Eva {Bartoníčková} and Martin {Boháč} and Františka {Frajkorová} and Jiří {Másilko} and Miroslava {Mončeková} and Vojtěch {Enev} and Jaromír {Wasserbauer}",
  title="Magnetic Properties of ZnFe2O4 Nanoparticles Synthesized by Starch-Assisted Sol-Gel Auto-combustion Method",
  journal="Journal of Superconductivity and Novel Magnetism",
  year="2014",
  volume="2015",
  number="28",
  pages="1417--1423",
  doi="10.1007/s10948-014-2870-z",
  issn="1557-1947",
  url="http://download.springer.com/static/pdf/991/art%253A10.1007%252Fs10948-014-2870-z.pdf?auth66=1424266486_c349ae594abe82e5fc249c8420c56dd1&ext=.pdf"
}