Synthesis and cation distribution of copper-substituted spinel-related lithium ferrite

H. M. Widatallah, C. Johnson, F. J. Berry, A. M. Gismelseed, E. Jartych, J. F. Marco, F. S. Gard, M. Pekala

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Single-phased Cu2+-substituted spinel-related Li0.5Fe2.5O4 was synthesized by sintering a mixture of Cu2+-substituted corundum-related α-Fe2O3 and Li2CO3 at 700 °C which is ∼325-400 °C lower than the temperature at which the material is prepared by the conventional ceramic methods. X-ray powder diffraction, X-ray photoelectron spectroscopy, Mössbauer spectroscopy and magnetic measurements were used to characterize the material. In contrast to high-temperature synthetic routes, the present one leads to a Cu+-and Fe2+-cation free material, thereby optimizing its technological value. Rietveld refinement of the XRD data favors a structural model in which Cu2+ substitutes for both Fe3+ and Li+ at the octahedral sites. Mössbauer and magnetic data are consistent with this model if spin thermal reversal and/or spin canting are taken into account for the later.

Original languageEnglish
Pages (from-to)1817-1822
Number of pages6
JournalJournal of Physics and Chemistry of Solids
Volume67
Issue number8
DOIs
Publication statusPublished - Aug 2006

Fingerprint

Lithium
spinel
Ferrite
Cations
Copper
ferrites
lithium
Positive ions
cations
copper
synthesis
magnetic measurement
sintering
Rietveld refinement
Corundum
x rays
aluminum oxides
Aluminum Oxide
routes
Magnetic variables measurement

Keywords

  • C. Mössbauer spectroscopy
  • C. X-ray diffraction (XRD)
  • C. X-ray photoelectron spectroscopy (XPS)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Synthesis and cation distribution of copper-substituted spinel-related lithium ferrite. / Widatallah, H. M.; Johnson, C.; Berry, F. J.; Gismelseed, A. M.; Jartych, E.; Marco, J. F.; Gard, F. S.; Pekala, M.

In: Journal of Physics and Chemistry of Solids, Vol. 67, No. 8, 08.2006, p. 1817-1822.

Research output: Contribution to journalArticle

Widatallah, H. M. ; Johnson, C. ; Berry, F. J. ; Gismelseed, A. M. ; Jartych, E. ; Marco, J. F. ; Gard, F. S. ; Pekala, M. / Synthesis and cation distribution of copper-substituted spinel-related lithium ferrite. In: Journal of Physics and Chemistry of Solids. 2006 ; Vol. 67, No. 8. pp. 1817-1822.
@article{36adf4ca94d24513bb4d0116437f29a7,
title = "Synthesis and cation distribution of copper-substituted spinel-related lithium ferrite",
abstract = "Single-phased Cu2+-substituted spinel-related Li0.5Fe2.5O4 was synthesized by sintering a mixture of Cu2+-substituted corundum-related α-Fe2O3 and Li2CO3 at 700 °C which is ∼325-400 °C lower than the temperature at which the material is prepared by the conventional ceramic methods. X-ray powder diffraction, X-ray photoelectron spectroscopy, M{\"o}ssbauer spectroscopy and magnetic measurements were used to characterize the material. In contrast to high-temperature synthetic routes, the present one leads to a Cu+-and Fe2+-cation free material, thereby optimizing its technological value. Rietveld refinement of the XRD data favors a structural model in which Cu2+ substitutes for both Fe3+ and Li+ at the octahedral sites. M{\"o}ssbauer and magnetic data are consistent with this model if spin thermal reversal and/or spin canting are taken into account for the later.",
keywords = "C. M{\"o}ssbauer spectroscopy, C. X-ray diffraction (XRD), C. X-ray photoelectron spectroscopy (XPS)",
author = "Widatallah, {H. M.} and C. Johnson and Berry, {F. J.} and Gismelseed, {A. M.} and E. Jartych and Marco, {J. F.} and Gard, {F. S.} and M. Pekala",
year = "2006",
month = "8",
doi = "10.1016/j.jpcs.2006.04.003",
language = "English",
volume = "67",
pages = "1817--1822",
journal = "Journal of Physics and Chemistry of Solids",
issn = "0022-3697",
publisher = "Elsevier Limited",
number = "8",

}

TY - JOUR

T1 - Synthesis and cation distribution of copper-substituted spinel-related lithium ferrite

AU - Widatallah, H. M.

AU - Johnson, C.

AU - Berry, F. J.

AU - Gismelseed, A. M.

AU - Jartych, E.

AU - Marco, J. F.

AU - Gard, F. S.

AU - Pekala, M.

PY - 2006/8

Y1 - 2006/8

N2 - Single-phased Cu2+-substituted spinel-related Li0.5Fe2.5O4 was synthesized by sintering a mixture of Cu2+-substituted corundum-related α-Fe2O3 and Li2CO3 at 700 °C which is ∼325-400 °C lower than the temperature at which the material is prepared by the conventional ceramic methods. X-ray powder diffraction, X-ray photoelectron spectroscopy, Mössbauer spectroscopy and magnetic measurements were used to characterize the material. In contrast to high-temperature synthetic routes, the present one leads to a Cu+-and Fe2+-cation free material, thereby optimizing its technological value. Rietveld refinement of the XRD data favors a structural model in which Cu2+ substitutes for both Fe3+ and Li+ at the octahedral sites. Mössbauer and magnetic data are consistent with this model if spin thermal reversal and/or spin canting are taken into account for the later.

AB - Single-phased Cu2+-substituted spinel-related Li0.5Fe2.5O4 was synthesized by sintering a mixture of Cu2+-substituted corundum-related α-Fe2O3 and Li2CO3 at 700 °C which is ∼325-400 °C lower than the temperature at which the material is prepared by the conventional ceramic methods. X-ray powder diffraction, X-ray photoelectron spectroscopy, Mössbauer spectroscopy and magnetic measurements were used to characterize the material. In contrast to high-temperature synthetic routes, the present one leads to a Cu+-and Fe2+-cation free material, thereby optimizing its technological value. Rietveld refinement of the XRD data favors a structural model in which Cu2+ substitutes for both Fe3+ and Li+ at the octahedral sites. Mössbauer and magnetic data are consistent with this model if spin thermal reversal and/or spin canting are taken into account for the later.

KW - C. Mössbauer spectroscopy

KW - C. X-ray diffraction (XRD)

KW - C. X-ray photoelectron spectroscopy (XPS)

UR - http://www.scopus.com/inward/record.url?scp=33746217829&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33746217829&partnerID=8YFLogxK

U2 - 10.1016/j.jpcs.2006.04.003

DO - 10.1016/j.jpcs.2006.04.003

M3 - Article

VL - 67

SP - 1817

EP - 1822

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

SN - 0022-3697

IS - 8

ER -