Cation distribution and magnetic properties of nickel-chromium ferrites NiCrxFe2-xO4 (0 ≤ x ≤ 1.4)

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

doi:10.1002/pssb.200440022

Cation distribution and magnetic properties of nickel-chromium ferrites NiCrxFe2-xO4 (0 ≤ x ≤ 1.4)

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

^*Corresponding author for this work

Physics

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

27 Citations (Scopus)

Abstract

Nickel-chromium ferrites NiCr_xFe_2-xO₄ (0 ≤ x ≤ 1.4) 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 = 0.9, 1.2 and 1.4. 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)	1497-1503
Number of pages	7
Journal	Physica Status Solidi (B) Basic Research
Volume	242
Issue number	7
DOIs	https://doi.org/10.1002/pssb.200440022
Publication status	Published - Jun 2005

ASJC Scopus subject areas

Condensed Matter Physics
Electronic, Optical and Magnetic Materials

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title = "Cation distribution and magnetic properties of nickel-chromium ferrites NiCrxFe2-xO4 (0 ≤ x ≤ 1.4)",

abstract = "Nickel-chromium ferrites NiCrxFe2-xO4 (0 ≤ x ≤ 1.4) 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 = 0.9, 1.2 and 1.4. 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 - Cation distribution and magnetic properties of nickel-chromium ferrites NiCrxFe2-xO4 (0 ≤ x ≤ 1.4)

AU - Rais, A.

AU - Gismelseed, A. M.

AU - Al-Omari, I. A.

PY - 2005/6

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N2 - Nickel-chromium ferrites NiCrxFe2-xO4 (0 ≤ x ≤ 1.4) 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 = 0.9, 1.2 and 1.4. 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 - Nickel-chromium ferrites NiCrxFe2-xO4 (0 ≤ x ≤ 1.4) 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 = 0.9, 1.2 and 1.4. 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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