On the magnetic compensation effect of lithium-chromium ferrites Li 0.5CrxFe2.5-xO4 (0 ≤ x ≤ 1.55)

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Abstract

Lithium-chromium ferrites Li0.5Fe2.5-xCr xO4 (0 ≤ x ≤ 1.55) were studied using X-ray diffraction, magnetization measurements and Mössbauer spectroscopy. X-ray diffraction patterns show that all samples have cubic spinel structure. The temperature dependent magnetic measurements revealed that a magnetic compensation point appears at chromium concentration x = 1.05, 1.25 and 1.55. Moreover, it was observed that the Curie temperature TC decreases and approaches the compensation temperature TK as Cr3+ substitution for Fe3+ increases. The magnetization data at all concentrations are discussed in the light of Néel's molecular field model taking into account the cation distributions obtained using the analysis of Mössbauer spectra.

Original languageEnglish
Pages (from-to)2949-2955
Number of pages7
JournalPhysica Status Solidi (B) Basic Research
Volume242
Issue number14
DOIs
Publication statusPublished - Nov 2005

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Ferrites
Chromium
Lithium
ferrites
chromium
Magnetization
lithium
X ray diffraction
magnetization
temperature compensation
Magnetic variables measurement
Curie temperature
Diffraction patterns
spinel
magnetic measurement
Cations
x rays
Substitution reactions
diffraction patterns
Positive ions

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

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title = "On the magnetic compensation effect of lithium-chromium ferrites Li 0.5CrxFe2.5-xO4 (0 ≤ x ≤ 1.55)",
abstract = "Lithium-chromium ferrites Li0.5Fe2.5-xCr xO4 (0 ≤ x ≤ 1.55) were studied using X-ray diffraction, magnetization measurements and M{\"o}ssbauer spectroscopy. X-ray diffraction patterns show that all samples have cubic spinel structure. The temperature dependent magnetic measurements revealed that a magnetic compensation point appears at chromium concentration x = 1.05, 1.25 and 1.55. Moreover, it was observed that the Curie temperature TC decreases and approaches the compensation temperature TK as Cr3+ substitution for Fe3+ increases. The magnetization data at all concentrations are discussed in the light of N{\'e}el's molecular field model taking into account the cation distributions obtained using the analysis of M{\"o}ssbauer spectra.",
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T1 - On the magnetic compensation effect of lithium-chromium ferrites Li 0.5CrxFe2.5-xO4 (0 ≤ x ≤ 1.55)

AU - Rais, A.

AU - Gismelseed, A. M.

AU - Al-Omari, I. A.

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N2 - Lithium-chromium ferrites Li0.5Fe2.5-xCr xO4 (0 ≤ x ≤ 1.55) were studied using X-ray diffraction, magnetization measurements and Mössbauer spectroscopy. X-ray diffraction patterns show that all samples have cubic spinel structure. The temperature dependent magnetic measurements revealed that a magnetic compensation point appears at chromium concentration x = 1.05, 1.25 and 1.55. Moreover, it was observed that the Curie temperature TC decreases and approaches the compensation temperature TK as Cr3+ substitution for Fe3+ increases. The magnetization data at all concentrations are discussed in the light of Néel's molecular field model taking into account the cation distributions obtained using the analysis of Mössbauer spectra.

AB - Lithium-chromium ferrites Li0.5Fe2.5-xCr xO4 (0 ≤ x ≤ 1.55) were studied using X-ray diffraction, magnetization measurements and Mössbauer spectroscopy. X-ray diffraction patterns show that all samples have cubic spinel structure. The temperature dependent magnetic measurements revealed that a magnetic compensation point appears at chromium concentration x = 1.05, 1.25 and 1.55. Moreover, it was observed that the Curie temperature TC decreases and approaches the compensation temperature TK as Cr3+ substitution for Fe3+ increases. The magnetization data at all concentrations are discussed in the light of Néel's molecular field model taking into account the cation distributions obtained using the analysis of Mössbauer spectra.

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