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

A. Rais; A. M. Gismelseed; I. A. Al-Omari

doi:10.1002/pssb.200541085

On the magnetic compensation effect of lithium-chromium ferrites Li _0.5Cr_xFe_2.5-xO₄ (0 ≤ x ≤ 1.55)

A. Rais^*, A. M. Gismelseed, I. A. Al-Omari

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Lithium-chromium ferrites Li_0.5Fe_2.5-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 T_C decreases and approaches the compensation temperature T_K 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 language	English
Pages (from-to)	2949-2955
Number of pages	7
Journal	Physica Status Solidi (B) Basic Research
Volume	242
Issue number	14
DOIs	https://doi.org/10.1002/pssb.200541085
Publication status	Published - Nov 2005
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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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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AU - Rais, A.

AU - Gismelseed, A. M.

AU - Al-Omari, I. A.

PY - 2005/11

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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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On the magnetic compensation effect of lithium-chromium ferrites Li _0.5Cr_xFe_2.5-xO₄ (0 ≤ x ≤ 1.55)

Abstract

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