Magnetic properties of cubic La(FexAl1-x) 13 intermetallic compounds

T. T.M. Palstra; G. J. Nieuwenhuys; J. A. Mydosh; K. H.J. Buschow

doi:10.1063/1.333667

Magnetic properties of cubic La(Fe_xAl_1-x) ₁₃ intermetallic compounds

T. T.M. Palstra^*, G. J. Nieuwenhuys, J. A. Mydosh, K. H.J. Buschow

^*Corresponding author for this work

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Abstract

We report susceptibility and magnetization measurements for La(Fe _xAl_1-x)₁₃ which can be stabilized over the x range 0.46-0.92. At low x values a mictomagnetic regime occurs with distinct cusps in the ac susceptibility. Upon increasing the Fe concentration a soft ferromagnetic phase is found which at lower temperatures shows anisotropy effects related to mictomagnetic behavior. Finally for x>0.86 antiferromagnetic order appears along with a very sharp metamagnetic transition in external fields of a few Teslas. The saturation moment increases linearly with x from 1.3μ_B to 2.3μ_B throughout the ferro- and metamagnetic regimes. These unusual properties are discussed in terms of local moment magnetism and the particular crystal structure which permits a large Fe-Fe coordination number at small distances.

Original language	English
Pages (from-to)	2367-2369
Number of pages	3
Journal	Journal of Applied Physics
Volume	55
Issue number	6
DOIs	https://doi.org/10.1063/1.333667
Publication status	Published - 1 Dec 1984
Externally published	Yes

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title = "Magnetic properties of cubic La(FexAl1-x) 13 intermetallic compounds",

abstract = "We report susceptibility and magnetization measurements for La(Fe xAl1-x)13 which can be stabilized over the x range 0.46-0.92. At low x values a mictomagnetic regime occurs with distinct cusps in the ac susceptibility. Upon increasing the Fe concentration a soft ferromagnetic phase is found which at lower temperatures shows anisotropy effects related to mictomagnetic behavior. Finally for x>0.86 antiferromagnetic order appears along with a very sharp metamagnetic transition in external fields of a few Teslas. The saturation moment increases linearly with x from 1.3μB to 2.3μB throughout the ferro- and metamagnetic regimes. These unusual properties are discussed in terms of local moment magnetism and the particular crystal structure which permits a large Fe-Fe coordination number at small distances.",

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AU - Palstra, T. T.M.

AU - Nieuwenhuys, G. J.

AU - Mydosh, J. A.

AU - Buschow, K. H.J.

PY - 1984/12/1

Y1 - 1984/12/1

N2 - We report susceptibility and magnetization measurements for La(Fe xAl1-x)13 which can be stabilized over the x range 0.46-0.92. At low x values a mictomagnetic regime occurs with distinct cusps in the ac susceptibility. Upon increasing the Fe concentration a soft ferromagnetic phase is found which at lower temperatures shows anisotropy effects related to mictomagnetic behavior. Finally for x>0.86 antiferromagnetic order appears along with a very sharp metamagnetic transition in external fields of a few Teslas. The saturation moment increases linearly with x from 1.3μB to 2.3μB throughout the ferro- and metamagnetic regimes. These unusual properties are discussed in terms of local moment magnetism and the particular crystal structure which permits a large Fe-Fe coordination number at small distances.

AB - We report susceptibility and magnetization measurements for La(Fe xAl1-x)13 which can be stabilized over the x range 0.46-0.92. At low x values a mictomagnetic regime occurs with distinct cusps in the ac susceptibility. Upon increasing the Fe concentration a soft ferromagnetic phase is found which at lower temperatures shows anisotropy effects related to mictomagnetic behavior. Finally for x>0.86 antiferromagnetic order appears along with a very sharp metamagnetic transition in external fields of a few Teslas. The saturation moment increases linearly with x from 1.3μB to 2.3μB throughout the ferro- and metamagnetic regimes. These unusual properties are discussed in terms of local moment magnetism and the particular crystal structure which permits a large Fe-Fe coordination number at small distances.

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Magnetic properties of cubic La(Fe_xAl_1-x) ₁₃ intermetallic compounds

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