Detail publikace

Structural, Cation Distribution, and Magnetic Properties of CoFe2O4 Spinel Ferrite Nanoparticles Synthesized Using a Starch-Assisted Sol–Gel Auto-Combustion Method

Originální název

Structural, Cation Distribution, and Magnetic Properties of CoFe2O4 Spinel Ferrite Nanoparticles Synthesized Using a Starch-Assisted Sol–Gel Auto-Combustion Method

Anglický název

Structural, Cation Distribution, and Magnetic Properties of CoFe2O4 Spinel Ferrite Nanoparticles Synthesized Using a Starch-Assisted Sol–Gel Auto-Combustion Method

Jazyk

en

Originální abstrakt

In this article, cobalt ferrite nanoparticles were synthesized using a starch-assisted sol–gel auto-combustion route. The significant role played by further annealing temperatures of 300, 500, 700, 900 and 1100 C on particle size and magnetic properties of ferrite nanoparticles was explored and reported. The prepared nanoparticles were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Raman spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and using a vibrating sample magnetometer. The X-ray diffraction patterns demonstrated single phase formation of CoFe2O4 spinel ferrite nanoparticles at different annealing temperatures. The FESEM analysis indicated a change of particle size and morphology at higher annealing temperature. The change in Raman modes and infrared absorption bands was observed with change of particle size and cation distribution. The highest value of coercivity (1091.2 Oe) and the saturation magnetization (54.76 erg/g) were obtained at annealing temperatures of 900 and 1100 C, respectively. X-ray photoelectron spectroscopy revealed the presence of Co2+ and Fe3+ at octahedral and tetrahedral sites in CoFe2O4 nanoparticles. Further, the cation redistribution with change of particle size was confirmed by X-ray photoelectron spectroscopy.

Anglický abstrakt

In this article, cobalt ferrite nanoparticles were synthesized using a starch-assisted sol–gel auto-combustion route. The significant role played by further annealing temperatures of 300, 500, 700, 900 and 1100 C on particle size and magnetic properties of ferrite nanoparticles was explored and reported. The prepared nanoparticles were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Raman spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and using a vibrating sample magnetometer. The X-ray diffraction patterns demonstrated single phase formation of CoFe2O4 spinel ferrite nanoparticles at different annealing temperatures. The FESEM analysis indicated a change of particle size and morphology at higher annealing temperature. The change in Raman modes and infrared absorption bands was observed with change of particle size and cation distribution. The highest value of coercivity (1091.2 Oe) and the saturation magnetization (54.76 erg/g) were obtained at annealing temperatures of 900 and 1100 C, respectively. X-ray photoelectron spectroscopy revealed the presence of Co2+ and Fe3+ at octahedral and tetrahedral sites in CoFe2O4 nanoparticles. Further, the cation redistribution with change of particle size was confirmed by X-ray photoelectron spectroscopy.

BibTex


@article{BUT113709,
  author="Raghvendra Singh {Yadav} and Jaromír {Havlica} and Jiří {Másilko} and Lukáš {Kalina} and Miroslava {Mončeková} and Vojtěch {Enev} and Jaromír {Wasserbauer} and Ivo {Kuřitka} and Zuzana {Kožáková}",
  title="Structural, Cation Distribution, and Magnetic Properties of CoFe2O4 Spinel Ferrite Nanoparticles Synthesized
Using a Starch-Assisted Sol–Gel Auto-Combustion Method",
  annote="In this article, cobalt ferrite nanoparticles were synthesized using a starch-assisted sol–gel auto-combustion
route. The significant role played by further annealing temperatures of 300, 500, 700, 900 and 1100 C on particle
size and magnetic properties of ferrite nanoparticles was explored and reported. The prepared nanoparticles
were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Raman
spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and using a vibrating
sample magnetometer. The X-ray diffraction patterns demonstrated single phase formation of CoFe2O4 spinel ferrite nanoparticles at different annealing temperatures. The FESEM analysis indicated a change of particle size and morphology at higher annealing temperature. The change in Raman modes and infrared absorption bands was observed with change of particle size and cation distribution. The highest value of coercivity (1091.2 Oe) and the saturation magnetization (54.76 erg/g) were obtained at annealing temperatures of 900 and 1100 C, respectively. X-ray photoelectron spectroscopy revealed the presence of Co2+ and Fe3+ at octahedral and tetrahedral sites in CoFe2O4 nanoparticles. Further, the cation redistribution with change of particle size was confirmed by X-ray photoelectron spectroscopy.",
  address="Springer",
  chapter="113709",
  doi="10.1007/s10948-015-2990-0",
  howpublished="online",
  institution="Springer",
  number="28",
  volume="2015",
  year="2015",
  month="february",
  pages="1851--1861",
  publisher="Springer",
  type="journal article in Web of Science"
}