Effect of pressure on magnetic properties of La(FexAl1-x)13 ferromagnetic compounds

K. Irisawa; A. Fujita; K. Fukamichi; H. Mitamura; T. Goto

doi:10.1016/S0925-8388(01)01614-0

Effect of pressure on magnetic properties of La(Fe_xAl_1-x)₁₃ ferromagnetic compounds

K. Irisawa, A. Fujita, K. Fukamichi, H. Mitamura, T. Goto

ENG - Materials Science

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

8 Citations (Scopus)

Abstract

Magnetization and thermomagnetization curves for La(Fe_0.85Al_0.15)₁₃ and La(Fe_0.83Al_0.17)₁₃ compounds have been measured under pressure in order to investigate the volume effect on the ferromagnetic state. With increasing pressure, the magnetic state of the La(Fe_0.85Al_0.15)₁₃ compound changes from the ferromagnetic to the antiferromagnetic state at quite a low pressure of 0.25 GPa. In the ferromagnetic state of La(Fe_xAl_1-x)₁₃ (x=0.83 and 0.85), the magnitude of the pressure coefficient ∂ ln T_C/∂P is much larger than that of ∂ ln M_S/∂P, suggesting a positive curvature of the density of states at the Fermi level.

Original language	English
Pages (from-to)	42-46
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	329
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-8388(01)01614-0
Publication status	Published - 2001 Nov 14

Keywords

High pressure
Magnetic measurements
Rare earth compounds
Transition metal compounds

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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title = "Effect of pressure on magnetic properties of La(FexAl1-x)13 ferromagnetic compounds",

abstract = "Magnetization and thermomagnetization curves for La(Fe0.85Al0.15)13 and La(Fe0.83Al0.17)13 compounds have been measured under pressure in order to investigate the volume effect on the ferromagnetic state. With increasing pressure, the magnetic state of the La(Fe0.85Al0.15)13 compound changes from the ferromagnetic to the antiferromagnetic state at quite a low pressure of 0.25 GPa. In the ferromagnetic state of La(FexAl1-x)13 (x=0.83 and 0.85), the magnitude of the pressure coefficient ∂ ln TC/∂P is much larger than that of ∂ ln MS/∂P, suggesting a positive curvature of the density of states at the Fermi level.",

keywords = "High pressure, Magnetic measurements, Rare earth compounds, Transition metal compounds",

author = "K. Irisawa and A. Fujita and K. Fukamichi and H. Mitamura and T. Goto",

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AU - Irisawa, K.

AU - Fujita, A.

AU - Fukamichi, K.

AU - Mitamura, H.

AU - Goto, T.

PY - 2001/11/14

Y1 - 2001/11/14

N2 - Magnetization and thermomagnetization curves for La(Fe0.85Al0.15)13 and La(Fe0.83Al0.17)13 compounds have been measured under pressure in order to investigate the volume effect on the ferromagnetic state. With increasing pressure, the magnetic state of the La(Fe0.85Al0.15)13 compound changes from the ferromagnetic to the antiferromagnetic state at quite a low pressure of 0.25 GPa. In the ferromagnetic state of La(FexAl1-x)13 (x=0.83 and 0.85), the magnitude of the pressure coefficient ∂ ln TC/∂P is much larger than that of ∂ ln MS/∂P, suggesting a positive curvature of the density of states at the Fermi level.

AB - Magnetization and thermomagnetization curves for La(Fe0.85Al0.15)13 and La(Fe0.83Al0.17)13 compounds have been measured under pressure in order to investigate the volume effect on the ferromagnetic state. With increasing pressure, the magnetic state of the La(Fe0.85Al0.15)13 compound changes from the ferromagnetic to the antiferromagnetic state at quite a low pressure of 0.25 GPa. In the ferromagnetic state of La(FexAl1-x)13 (x=0.83 and 0.85), the magnitude of the pressure coefficient ∂ ln TC/∂P is much larger than that of ∂ ln MS/∂P, suggesting a positive curvature of the density of states at the Fermi level.

KW - High pressure

KW - Magnetic measurements

KW - Rare earth compounds

KW - Transition metal compounds

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