Magnetic properties of NiAs-type Fe-Sb-Te alloys

A. M. Gismelseed; A. A. Yousif

doi:10.1016/j.jmmm.2004.10.092

Magnetic properties of NiAs-type Fe-Sb-Te alloys

A. M. Gismelseed^*, A. A. Yousif

^*Corresponding author for this work

Physics

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

2 Citations (Scopus)

Abstract

The influence of the addition of Te on the physical and magnetic properties of the binary alloy Fe_0.540Sb_0.460 (i.e. Fe _l.173Sb) was studied using X-ray diffraction, Mössbauer spectroscopy and magnetic susceptibility measurements. The specimens are characterized as single NiAs-type phases and their lattice parameters are calculated. The temperature dependence of the hyperfine interaction parameters has shown that iron occupies two distinct crystallographic sites: FeI in octahedrally coordinated regular sites is ordered antiferromagnetically, while FeII occupies pyramidal interstitial positions and remains paramagnetic. The phase transition temperature of FeI is influenced by Fe and/or Te/Sb substitutions. The strength of the covalent bonding of the resonant atom to the lattice is described in terms of the Mössbauer temperature θ_M deduced from the temperature dependence of the area under the resonance curve. The findings are clearly correlated with the ionicity variations of the chemical bonds as indicated by the changes in the axial ratio c/a and the magnetic moments.

Original language	English
Pages (from-to)	37-43
Number of pages	7
Journal	Journal of Magnetism and Magnetic Materials
Volume	292
DOIs	https://doi.org/10.1016/j.jmmm.2004.10.092
Publication status	Published - Apr 2005

Keywords

Lattice dynamics
Magnetic properties
Mössbauer of FeSbTe
Ternary alloys

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2004.10.092

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title = "Magnetic properties of NiAs-type Fe-Sb-Te alloys",

abstract = "The influence of the addition of Te on the physical and magnetic properties of the binary alloy Fe0.540Sb0.460 (i.e. Fe l.173Sb) was studied using X-ray diffraction, M{\"o}ssbauer spectroscopy and magnetic susceptibility measurements. The specimens are characterized as single NiAs-type phases and their lattice parameters are calculated. The temperature dependence of the hyperfine interaction parameters has shown that iron occupies two distinct crystallographic sites: FeI in octahedrally coordinated regular sites is ordered antiferromagnetically, while FeII occupies pyramidal interstitial positions and remains paramagnetic. The phase transition temperature of FeI is influenced by Fe and/or Te/Sb substitutions. The strength of the covalent bonding of the resonant atom to the lattice is described in terms of the M{\"o}ssbauer temperature θM deduced from the temperature dependence of the area under the resonance curve. The findings are clearly correlated with the ionicity variations of the chemical bonds as indicated by the changes in the axial ratio c/a and the magnetic moments.",

keywords = "Lattice dynamics, Magnetic properties, M{\"o}ssbauer of FeSbTe, Ternary alloys",

author = "Gismelseed, {A. M.} and Yousif, {A. A.}",

year = "2005",

month = apr,

doi = "10.1016/j.jmmm.2004.10.092",

language = "English",

volume = "292",

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journal = "Journal of Magnetism and Magnetic Materials",

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T1 - Magnetic properties of NiAs-type Fe-Sb-Te alloys

AU - Gismelseed, A. M.

AU - Yousif, A. A.

PY - 2005/4

Y1 - 2005/4

N2 - The influence of the addition of Te on the physical and magnetic properties of the binary alloy Fe0.540Sb0.460 (i.e. Fe l.173Sb) was studied using X-ray diffraction, Mössbauer spectroscopy and magnetic susceptibility measurements. The specimens are characterized as single NiAs-type phases and their lattice parameters are calculated. The temperature dependence of the hyperfine interaction parameters has shown that iron occupies two distinct crystallographic sites: FeI in octahedrally coordinated regular sites is ordered antiferromagnetically, while FeII occupies pyramidal interstitial positions and remains paramagnetic. The phase transition temperature of FeI is influenced by Fe and/or Te/Sb substitutions. The strength of the covalent bonding of the resonant atom to the lattice is described in terms of the Mössbauer temperature θM deduced from the temperature dependence of the area under the resonance curve. The findings are clearly correlated with the ionicity variations of the chemical bonds as indicated by the changes in the axial ratio c/a and the magnetic moments.

AB - The influence of the addition of Te on the physical and magnetic properties of the binary alloy Fe0.540Sb0.460 (i.e. Fe l.173Sb) was studied using X-ray diffraction, Mössbauer spectroscopy and magnetic susceptibility measurements. The specimens are characterized as single NiAs-type phases and their lattice parameters are calculated. The temperature dependence of the hyperfine interaction parameters has shown that iron occupies two distinct crystallographic sites: FeI in octahedrally coordinated regular sites is ordered antiferromagnetically, while FeII occupies pyramidal interstitial positions and remains paramagnetic. The phase transition temperature of FeI is influenced by Fe and/or Te/Sb substitutions. The strength of the covalent bonding of the resonant atom to the lattice is described in terms of the Mössbauer temperature θM deduced from the temperature dependence of the area under the resonance curve. The findings are clearly correlated with the ionicity variations of the chemical bonds as indicated by the changes in the axial ratio c/a and the magnetic moments.

KW - Lattice dynamics

KW - Magnetic properties

KW - Mössbauer of FeSbTe

KW - Ternary alloys

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U2 - 10.1016/j.jmmm.2004.10.092

DO - 10.1016/j.jmmm.2004.10.092

M3 - Article

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SN - 0304-8853

VL - 292

SP - 37

EP - 43

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -

Magnetic properties of NiAs-type Fe-Sb-Te alloys

Abstract

Keywords

ASJC Scopus subject areas

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