Magnetic and transport properties of Fe3(Ga1 - XAlx)4 compounds

H. G.M. Duijn; E. Brücka; K. H.J. Buschow; F. R. de Boer; R. Coehoorn

doi:10.1016/S0921-4526(97)00888-0

Magnetic and transport properties of Fe₃(Ga_{1 - X}Al_x)₄ compounds

H. G.M. Duijn
, E. Brücka
, K. H.J. Buschow
, F. R. de Boer
, R. Coehoorn

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

6 Citations (Scopus)

Abstract

The magnetic phase transitions of the itinerant-electron system Fe₃(Ga_{1 - x}Al_x)₄, with x in the range 0.00 ≤ x ≤ 0.10, are studied by means of magnetisation and (magneto)resistivity measurements. At 65.5 K, with increasing temperature a first-order magnetic phase transition from a ferromagnetic to an antiferromagnetic state is observed for Fe₃Ga₄. Substitution of Al for Ga results in an increase of the transition temperature of 4.1(4) K/at% Al; the low-temperature ferromagnetic state is stabilised with respect to the high-temperature antiferromagnetic state. This behaviour is different to the effect of Co substitution on the Fe sites, where the magnetism is suppressed, eventually leading to paramagnetism. The results are discussed in the framework of the theory on magnetic phase transitions in itinerant-electron systems of Moriya and Usami.

Original language	English
Pages (from-to)	195-200
Number of pages	6
Journal	Physica B: Condensed Matter
Volume	245
Issue number	3
DOIs	https://doi.org/10.1016/S0921-4526(97)00888-0
Publication status	Published - 4 Mar 1998
Externally published	Yes

Funding

This research was supported by the Technology Foundation (STW).

Keywords

Antiferromagnetic-ferromagnetic transition
Itinerant magnetism
Magnetoresistivity
Metamagnetism

Access to Document

10.1016/S0921-4526(97)00888-0

Cite this

@article{0aae846f38694354b605ec8107a2fb8f,

title = "Magnetic and transport properties of Fe3(Ga1 - XAlx)4 compounds",

abstract = "The magnetic phase transitions of the itinerant-electron system Fe3(Ga1 - xAlx)4, with x in the range 0.00 ≤ x ≤ 0.10, are studied by means of magnetisation and (magneto)resistivity measurements. At 65.5 K, with increasing temperature a first-order magnetic phase transition from a ferromagnetic to an antiferromagnetic state is observed for Fe3Ga4. Substitution of Al for Ga results in an increase of the transition temperature of 4.1(4) K/at\% Al; the low-temperature ferromagnetic state is stabilised with respect to the high-temperature antiferromagnetic state. This behaviour is different to the effect of Co substitution on the Fe sites, where the magnetism is suppressed, eventually leading to paramagnetism. The results are discussed in the framework of the theory on magnetic phase transitions in itinerant-electron systems of Moriya and Usami.",

keywords = "Antiferromagnetic-ferromagnetic transition, Itinerant magnetism, Magnetoresistivity, Metamagnetism",

author = "Duijn, \{H. G.M.\} and E. Br{\"u}cka and Buschow, \{K. H.J.\} and \{de Boer\}, \{F. R.\} and R. Coehoorn",

year = "1998",

month = mar,

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doi = "10.1016/S0921-4526(97)00888-0",

language = "English",

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TY - JOUR

T1 - Magnetic and transport properties of Fe3(Ga1 - XAlx)4 compounds

AU - Duijn, H. G.M.

AU - Brücka, E.

AU - Buschow, K. H.J.

AU - de Boer, F. R.

AU - Coehoorn, R.

PY - 1998/3/4

Y1 - 1998/3/4

N2 - The magnetic phase transitions of the itinerant-electron system Fe3(Ga1 - xAlx)4, with x in the range 0.00 ≤ x ≤ 0.10, are studied by means of magnetisation and (magneto)resistivity measurements. At 65.5 K, with increasing temperature a first-order magnetic phase transition from a ferromagnetic to an antiferromagnetic state is observed for Fe3Ga4. Substitution of Al for Ga results in an increase of the transition temperature of 4.1(4) K/at% Al; the low-temperature ferromagnetic state is stabilised with respect to the high-temperature antiferromagnetic state. This behaviour is different to the effect of Co substitution on the Fe sites, where the magnetism is suppressed, eventually leading to paramagnetism. The results are discussed in the framework of the theory on magnetic phase transitions in itinerant-electron systems of Moriya and Usami.

AB - The magnetic phase transitions of the itinerant-electron system Fe3(Ga1 - xAlx)4, with x in the range 0.00 ≤ x ≤ 0.10, are studied by means of magnetisation and (magneto)resistivity measurements. At 65.5 K, with increasing temperature a first-order magnetic phase transition from a ferromagnetic to an antiferromagnetic state is observed for Fe3Ga4. Substitution of Al for Ga results in an increase of the transition temperature of 4.1(4) K/at% Al; the low-temperature ferromagnetic state is stabilised with respect to the high-temperature antiferromagnetic state. This behaviour is different to the effect of Co substitution on the Fe sites, where the magnetism is suppressed, eventually leading to paramagnetism. The results are discussed in the framework of the theory on magnetic phase transitions in itinerant-electron systems of Moriya and Usami.

KW - Antiferromagnetic-ferromagnetic transition

KW - Itinerant magnetism

KW - Magnetoresistivity

KW - Metamagnetism

UR - https://www.scopus.com/pages/publications/0032024541

U2 - 10.1016/S0921-4526(97)00888-0

DO - 10.1016/S0921-4526(97)00888-0

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JO - Physica B: Condensed Matter

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