Publication detail

Structural and Magnetic Properties of CoFe2-xGdxO4 (x = 0.0-0.1) Spinel Ferrite Nanoparticles synthesized by Starch-Assisted Sol-Gel Auto-combustion Method

YADAV, R. HAVLICA, J. KUŘITKA, I. KOŽÁKOVÁ, Z. BARTONÍČKOVÁ, E. MÁSILKO, J. KALINA, L. WASSERBAUER, J. HAJDÚCHOVÁ, M. ENEV, V.

Original Title

Type

journal article in Web of Science

Language

English

Original Abstract

In this present article, CoFe2-xGdxO4 (x = 0.0-0.1) nanoparticles were synthesized by starch-assisted sol–gel auto-combustion method. Powder X-ray diffraction patterns revealed the formation of cubic spinel ferrite with the signature of GdFeO3 phase at higher Gd3+ concentration. The field emission scanning electron microscopy study demonstrated the spherical nanoparticle in the size range 4–10 nm. Raman and Fourier transform infrared spectra supported the formation of the spinel ferrite structure in the nanocrystalline form. The X-ray photoelectron spectroscopy (XPS) analysis confirmed the presence of Co2+ and Fe3+ at the octahedral site as well as the tetrahedral site in CoFe2-xGdxO4 (x = 0.05) nanoparticles. The distribution of Fe3+ ions was obtained to be about 73 % in the octahedral sites and about 27 % in the tetrahedral sites. The distribution of Co2+ ions at the octahedral and tetrahedral sites were 78 and 22 %, respectively. The increase in saturation magnetization and coercivity from 14.59 emu/g (x = 0.00) to 16.11 emu/g (x = 0.025) and 51.75 Oe (x = 0.00) to 92.86 Oe (x = 0.050), respectively, in CoFe2-xGdxO4 nanoparticles were observed.

Keywords

Ceramic nanoparticles, Magnetic properties, Spinel ferrites

Authors

YADAV, R.; HAVLICA, J.; KUŘITKA, I.; KOŽÁKOVÁ, Z.; BARTONÍČKOVÁ, E.; MÁSILKO, J.; KALINA, L.; WASSERBAUER, J.; HAJDÚCHOVÁ, M.; ENEV, V.

RIV year

2015

Released

14. 1. 2015

Publisher

Springer

Location

New York

ISBN

1557-1947

Periodical

Journal of Superconductivity and Novel Magnetism

Year of study

2015

Number

State

United States of America

Pages from

1797

Pages to

1806

Pages count

BibTex

@article{BUT113708,
  author="Raghvendra Singh {Yadav} and Jaromír {Havlica} and Ivo {Kuřitka} and Zuzana {Kožáková} and Eva {Bartoníčková} and Jiří {Másilko} and Lukáš {Kalina} and Jaromír {Wasserbauer} and Miroslava {Mončeková} and Vojtěch {Enev}",
  title="Structural and Magnetic Properties of CoFe2-xGdxO4 (x = 0.0-0.1) Spinel Ferrite Nanoparticles synthesized by Starch-Assisted Sol-Gel Auto-combustion Method",
  journal="Journal of Superconductivity and Novel Magnetism",
  year="2015",
  volume="2015",
  number="28",
  pages="1797--1806",
  doi="10.1007/s10948-015-2951-7",
  issn="1557-1947"
}