Publication result detail

Structural and Magnetic Properties of CoFe2O4 Nanoparticles Synthesized by Starch-Assisted Sol-Gel Auto-Combustion Method in Air, Argon, Nitrogen and Vacuum Atmospheres

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

Original Title

Structural and Magnetic Properties of CoFe2O4 Nanoparticles Synthesized by Starch-Assisted Sol-Gel Auto-Combustion Method in Air, Argon, Nitrogen and Vacuum Atmospheres

English Title

Structural and Magnetic Properties of CoFe2O4 Nanoparticles Synthesized by Starch-Assisted Sol-Gel Auto-Combustion Method in Air, Argon, Nitrogen and Vacuum Atmospheres

Type

WoS Article

Original Abstract

In the present work, structural and magnetic properties of CoFe2O4 nanoparticles synthesized by starchassisted sol–gel auto-combustion method in air, argon, nitrogen and vacuum atmospheres were investigated. The particle size, shape, crystal structure and magnetic properties of synthesized ferrite nanoparticles were investigated by powder X-ray diffractometer (XRD), field emission scanning electron microscopy (FE-SEM), Raman spectrometer, Fourier transform infrared spectroscopy (FTIR) and a vibrating sample magnetometer (VSM). The FESEM micrographs indicate the octahedron-like cobalt ferrite nanoparticles formation in air atmosphere; however, spherical nanoparticles were formed in argon, nitrogen and vacuum atmospheres. An infrared spectroscopy study showed the presence of two absorption bands in the frequency range around 560 cm−1 (ν1) and around 340 cm−1 (ν2) which indicated the presence of tetrahedral and octahedral group complexes, respectively, within the spinel lattice. Room temperature magnetization measurements showed that the saturation magnetization (Ms) and coercivity (Hc) were influenced by cobalt ferrite formation atmosphere, i.e., air, argon, nitrogen and vacuum.

English abstract

In the present work, structural and magnetic properties of CoFe2O4 nanoparticles synthesized by starchassisted sol–gel auto-combustion method in air, argon, nitrogen and vacuum atmospheres were investigated. The particle size, shape, crystal structure and magnetic properties of synthesized ferrite nanoparticles were investigated by powder X-ray diffractometer (XRD), field emission scanning electron microscopy (FE-SEM), Raman spectrometer, Fourier transform infrared spectroscopy (FTIR) and a vibrating sample magnetometer (VSM). The FESEM micrographs indicate the octahedron-like cobalt ferrite nanoparticles formation in air atmosphere; however, spherical nanoparticles were formed in argon, nitrogen and vacuum atmospheres. An infrared spectroscopy study showed the presence of two absorption bands in the frequency range around 560 cm−1 (ν1) and around 340 cm−1 (ν2) which indicated the presence of tetrahedral and octahedral group complexes, respectively, within the spinel lattice. Room temperature magnetization measurements showed that the saturation magnetization (Ms) and coercivity (Hc) were influenced by cobalt ferrite formation atmosphere, i.e., air, argon, nitrogen and vacuum.

Keywords

Cobalt ferrite; Magnetic properties; Nanomaterials

Key words in English

Cobalt ferrite; Magnetic properties; Nanomaterials

Authors

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

RIV year

2016

Released

22.10.2014

Publisher

Springer

Location

New York 2014

ISBN

1557-1947

Periodical

Journal of Superconductivity and Novel Magnetism

Volume

2015

Number

28

State

United States of America

Pages from

249

Pages to

258

Pages count

10

URL

http://download.springer.com/static/pdf/253/art%253A10.1007%252Fs10948-014-2854-z.pdf?auth66=1424262324_16d09e53fafb1f3164913c58514f0974&ext=.pdf

BibTex

@article{BUT112967,
  author="Raghvendra Singh {Yadav} and Jaromír {Havlica} and Petr {Ptáček} and Ivo {Kuřitka} and Zuzana {Kožáková} and Martin {Palou} and Eva {Bartoníčková} and Martin {Boháč} and Františka {Frajkorová} and Jiří {Másilko} and Martin {Zmrzlý} and Miroslava {Mončeková} and Vojtěch {Enev}",
  title="Structural and Magnetic Properties of CoFe2O4 Nanoparticles Synthesized by Starch-Assisted Sol-Gel Auto-Combustion Method in Air, Argon, Nitrogen and Vacuum Atmospheres",
  journal="Journal of Superconductivity and Novel Magnetism",
  year="2014",
  volume="2015",
  number="28",
  pages="249--258",
  doi="10.1007/s10948-014-2854-z",
  issn="1557-1939",
  url="http://download.springer.com/static/pdf/253/art%253A10.1007%252Fs10948-014-2854-z.pdf?auth66=1424262324_16d09e53fafb1f3164913c58514f0974&ext=.pdf"
}