Structural and magnetic characterization of Ti-substituted Li 0.5Fe2.5O4 prepared using hydrothermal and solid-state routes

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Abstract

Single-phased spinel-related Ti4+-substituted Li 0.5Fe2.5O4 has been synthesized by heating a mixture of hydrothermally prepared Ti4+-substituted α-Fe 2O3 and Li2CO3 at 850°C (12 h). This temperature is ca. 250-350°C lower than those at which the material is conventionally prepared by the ceramic techniques. X-ray diffraction was used to analyze the evolution of the formation process and, in conjunction with Mössbauer and magnetization measurements, to determine the cation distribution of the resulting ferrite. The results imply that the Ti 4+ ions substitute for Fe3+ ones at the octahedral (B) sites whilst the excess Li+ ions, required for balancing the charge in the spinel-related structure, replace Fe3+ ions at the tetrahedral (A) sites.

Original languageEnglish
Article number012131
JournalJournal of Physics: Conference Series
Volume217
Issue number1
DOIs
Publication statusPublished - 2010

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routes
solid state
spinel
ions
ferrites
ceramics
substitutes
cations
magnetization
heating
diffraction
x rays
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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title = "Structural and magnetic characterization of Ti-substituted Li 0.5Fe2.5O4 prepared using hydrothermal and solid-state routes",
abstract = "Single-phased spinel-related Ti4+-substituted Li 0.5Fe2.5O4 has been synthesized by heating a mixture of hydrothermally prepared Ti4+-substituted α-Fe 2O3 and Li2CO3 at 850°C (12 h). This temperature is ca. 250-350°C lower than those at which the material is conventionally prepared by the ceramic techniques. X-ray diffraction was used to analyze the evolution of the formation process and, in conjunction with M{\"o}ssbauer and magnetization measurements, to determine the cation distribution of the resulting ferrite. The results imply that the Ti 4+ ions substitute for Fe3+ ones at the octahedral (B) sites whilst the excess Li+ ions, required for balancing the charge in the spinel-related structure, replace Fe3+ ions at the tetrahedral (A) sites.",
author = "Widatallah, {H. M.} and C. Johnson and A. Gismelseed and A. Al-Rawas and M. Elzain and A. Yousif",
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T1 - Structural and magnetic characterization of Ti-substituted Li 0.5Fe2.5O4 prepared using hydrothermal and solid-state routes

AU - Widatallah, H. M.

AU - Johnson, C.

AU - Gismelseed, A.

AU - Al-Rawas, A.

AU - Elzain, M.

AU - Yousif, A.

PY - 2010

Y1 - 2010

N2 - Single-phased spinel-related Ti4+-substituted Li 0.5Fe2.5O4 has been synthesized by heating a mixture of hydrothermally prepared Ti4+-substituted α-Fe 2O3 and Li2CO3 at 850°C (12 h). This temperature is ca. 250-350°C lower than those at which the material is conventionally prepared by the ceramic techniques. X-ray diffraction was used to analyze the evolution of the formation process and, in conjunction with Mössbauer and magnetization measurements, to determine the cation distribution of the resulting ferrite. The results imply that the Ti 4+ ions substitute for Fe3+ ones at the octahedral (B) sites whilst the excess Li+ ions, required for balancing the charge in the spinel-related structure, replace Fe3+ ions at the tetrahedral (A) sites.

AB - Single-phased spinel-related Ti4+-substituted Li 0.5Fe2.5O4 has been synthesized by heating a mixture of hydrothermally prepared Ti4+-substituted α-Fe 2O3 and Li2CO3 at 850°C (12 h). This temperature is ca. 250-350°C lower than those at which the material is conventionally prepared by the ceramic techniques. X-ray diffraction was used to analyze the evolution of the formation process and, in conjunction with Mössbauer and magnetization measurements, to determine the cation distribution of the resulting ferrite. The results imply that the Ti 4+ ions substitute for Fe3+ ones at the octahedral (B) sites whilst the excess Li+ ions, required for balancing the charge in the spinel-related structure, replace Fe3+ ions at the tetrahedral (A) sites.

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