skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Magnetic dilution of the iron sublattice in CoFe{sub 2-x}Sc{sub x}O{sub 4} (0{<=}x{<=}1)

Abstract

Substitution of Fe for Sc in CoFe{sub 2}O{sub 4} spinel structure is presented. All CoFe{sub 2-x}Sc{sub x}O{sub 4} compounds crystallize in the spinel type structure (space group Fd3-bar m). By using X-ray diffraction studies, magnetic measurements and in-field {sup 57}Fe Moessbauer spectrometry, the limit of substitution has been determined to be equal to x=0.56. An increase in the cell parameter and the strains and a decrease in the apparent crystallites size are observed. For x>0.3, a partial oxidation of cobalt is evidenced and Co{sup 3+} is stabilized in the structure. A ferromagnetic behavior has been observed for all investigated compounds. As x increases, the Curie temperature and the hyperfine fields decrease. Following the Stephenson model, the diminution of T{sub C} is ascribed to a decrease of the main J{sub AB} interaction. -- Graphical abstract: Evolution of the cell parameters, the magnetic properties and the Moessbauer spectra in CoFe{sub 2-r}Sc{sub r}O{sub 4} (0{<=}r{<=}1). Display Omitted

Authors:
 [1]; ;  [1];  [2];  [1]
  1. Institut de Physique et Chimie des Materiaux de Strasbourg, UMR 7504 (CNRS-Universite de Strasbourg), 23 rue du Loess, BP 43, 67034 Strasbourg (France)
  2. Laboratoire de Physique de l'Etat Condense, UMR 6087 (CNRS-Universite du Maine), Avenue Olivier Messiaen, 72085 Le Mans (France)
Publication Date:
OSTI Identifier:
21494116
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 183; Journal Issue: 11; Other Information: DOI: 10.1016/j.jssc.2010.09.004; PII: S0022-4596(10)00387-7; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COBALT IONS; COBALT OXIDES; CUBIC LATTICES; CURIE POINT; DILUTION; INTERACTIONS; IRON 57; IRON OXIDES; MAGNETIC PROPERTIES; MOESSBAUER EFFECT; OXIDATION; SCANDIUM OXIDES; SPACE GROUPS; SPINELS; STRAINS; X-RAY DIFFRACTION; CHALCOGENIDES; CHARGED PARTICLES; CHEMICAL REACTIONS; COBALT COMPOUNDS; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; EVEN-ODD NUCLEI; INTERMEDIATE MASS NUCLEI; IONS; IRON COMPOUNDS; IRON ISOTOPES; ISOTOPES; MINERALS; NUCLEI; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SCANDIUM COMPOUNDS; SCATTERING; STABLE ISOTOPES; SYMMETRY GROUPS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE

Citation Formats

Lefevre, C, Roulland, F, Viart, N, Greneche, J M, and Pourroy, G. Magnetic dilution of the iron sublattice in CoFe{sub 2-x}Sc{sub x}O{sub 4} (0{<=}x{<=}1). United States: N. p., 2010. Web. doi:10.1016/j.jssc.2010.09.004.
Lefevre, C, Roulland, F, Viart, N, Greneche, J M, & Pourroy, G. Magnetic dilution of the iron sublattice in CoFe{sub 2-x}Sc{sub x}O{sub 4} (0{<=}x{<=}1). United States. https://doi.org/10.1016/j.jssc.2010.09.004
Lefevre, C, Roulland, F, Viart, N, Greneche, J M, and Pourroy, G. 2010. "Magnetic dilution of the iron sublattice in CoFe{sub 2-x}Sc{sub x}O{sub 4} (0{<=}x{<=}1)". United States. https://doi.org/10.1016/j.jssc.2010.09.004.
@article{osti_21494116,
title = {Magnetic dilution of the iron sublattice in CoFe{sub 2-x}Sc{sub x}O{sub 4} (0{<=}x{<=}1)},
author = {Lefevre, C and Roulland, F and Viart, N and Greneche, J M and Pourroy, G},
abstractNote = {Substitution of Fe for Sc in CoFe{sub 2}O{sub 4} spinel structure is presented. All CoFe{sub 2-x}Sc{sub x}O{sub 4} compounds crystallize in the spinel type structure (space group Fd3-bar m). By using X-ray diffraction studies, magnetic measurements and in-field {sup 57}Fe Moessbauer spectrometry, the limit of substitution has been determined to be equal to x=0.56. An increase in the cell parameter and the strains and a decrease in the apparent crystallites size are observed. For x>0.3, a partial oxidation of cobalt is evidenced and Co{sup 3+} is stabilized in the structure. A ferromagnetic behavior has been observed for all investigated compounds. As x increases, the Curie temperature and the hyperfine fields decrease. Following the Stephenson model, the diminution of T{sub C} is ascribed to a decrease of the main J{sub AB} interaction. -- Graphical abstract: Evolution of the cell parameters, the magnetic properties and the Moessbauer spectra in CoFe{sub 2-r}Sc{sub r}O{sub 4} (0{<=}r{<=}1). Display Omitted},
doi = {10.1016/j.jssc.2010.09.004},
url = {https://www.osti.gov/biblio/21494116}, journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 11,
volume = 183,
place = {United States},
year = {Mon Nov 15 00:00:00 EST 2010},
month = {Mon Nov 15 00:00:00 EST 2010}
}