Cation distribution of cobalt ferrite electrosynthesized nanoparticles. A methodological comparison Articles uri icon

authors

  • SANCHEZ MARCOS, JORGE
  • Mazario Masip, Eva
  • Rodríguez Velamazán, Jose Alberto
  • SALAS COLERA, EDUARDO
  • Herrasti González, Pilar
  • Menéndez González, Nieves

publication date

  • March 2018

start page

  • 909

end page

  • 917

volume

  • 739

International Standard Serial Number (ISSN)

  • 0925-8388

Electronic International Standard Serial Number (EISSN)

  • 1873-4669

abstract

  • The present work seeks to analyse the structural and magnetic properties of cobalt ferrite nanoparticles obtained by electrochemical synthesis by high-resolution transmission electronic microscopy (HRTEM), X-ray absorption spectroscopy (XAS), Mössbauer spectroscopy (MS), neutron diffraction (ND) and SQUID magnetometer. The cationic distribution is analyzed by different techniques. The inversion degree determined by the most accurate measurements was 0.73(1), and the formula for the nanoparticles therefore was (↑Co0.27Fe0.73)[↓Co0.73Fe1.27]O4. The magnetic moment found from DC and Mössbauer spectroscopy measurements was 3.8(3) μB, and the coercivity was 7870 Oe at 100 K.

subjects

  • Chemistry
  • Physics

keywords

  • electrosynthesis; inversion degree; mössbauer spectroscopy; nanoferrites; neutron diffraction