Magnetic moment and spin-wave stiffness constant of La(Co1-xMnx)13 compounds consisting of icosahedrons

Kaku Asada; Asaya Fujita; Kazuaki Fukamichi

doi:10.1016/S0925-8388(03)00018-5

Magnetic moment and spin-wave stiffness constant of La(Co_1-xMn_x)₁₃ compounds consisting of icosahedrons

Kaku Asada, Asaya Fujita, Kazuaki Fukamichi

ENG - Materials Science

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

2 Citations (Scopus)

Abstract

The substitution limit of Mn and the magnetic properties of La(Co_1-xMn_x)₁₃ compounds with a NaZn₁₃-type structure have been investigated. X-ray diffraction showed that these compounds retain the cubic NaZn₁₃-type structure in the Mn composition range x≤0.22. The concentration dependence of the magnetic moment per 3d atom exhibits a broad maximum at around x=0.05. The low value of the high field susceptibility for low x reflects a strong ferromagnetic state. The Curie temperature and the spin-wave stiffness constant decrease with increasing x. These magnetic data imply a change in the magnetic state from the strong to the weak ferromagnetic state. Therefore, the initial increase of magnetic moment is qualitatively explained by Friedel's virtual bound state model.

Original language	English
Pages (from-to)	72-77
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	354
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-8388(03)00018-5
Publication status	Published - 2003 May 12

Keywords

Magnetic measurements
Magnetically ordered materials
Rare earth compounds
Transition metal compounds

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/S0925-8388(03)00018-5

Cite this

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title = "Magnetic moment and spin-wave stiffness constant of La(Co1-xMnx)13 compounds consisting of icosahedrons",

abstract = "The substitution limit of Mn and the magnetic properties of La(Co1-xMnx)13 compounds with a NaZn13-type structure have been investigated. X-ray diffraction showed that these compounds retain the cubic NaZn13-type structure in the Mn composition range x≤0.22. The concentration dependence of the magnetic moment per 3d atom exhibits a broad maximum at around x=0.05. The low value of the high field susceptibility for low x reflects a strong ferromagnetic state. The Curie temperature and the spin-wave stiffness constant decrease with increasing x. These magnetic data imply a change in the magnetic state from the strong to the weak ferromagnetic state. Therefore, the initial increase of magnetic moment is qualitatively explained by Friedel's virtual bound state model.",

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T1 - Magnetic moment and spin-wave stiffness constant of La(Co1-xMnx)13 compounds consisting of icosahedrons

AU - Asada, Kaku

AU - Fujita, Asaya

AU - Fukamichi, Kazuaki

PY - 2003/5/12

Y1 - 2003/5/12

N2 - The substitution limit of Mn and the magnetic properties of La(Co1-xMnx)13 compounds with a NaZn13-type structure have been investigated. X-ray diffraction showed that these compounds retain the cubic NaZn13-type structure in the Mn composition range x≤0.22. The concentration dependence of the magnetic moment per 3d atom exhibits a broad maximum at around x=0.05. The low value of the high field susceptibility for low x reflects a strong ferromagnetic state. The Curie temperature and the spin-wave stiffness constant decrease with increasing x. These magnetic data imply a change in the magnetic state from the strong to the weak ferromagnetic state. Therefore, the initial increase of magnetic moment is qualitatively explained by Friedel's virtual bound state model.

AB - The substitution limit of Mn and the magnetic properties of La(Co1-xMnx)13 compounds with a NaZn13-type structure have been investigated. X-ray diffraction showed that these compounds retain the cubic NaZn13-type structure in the Mn composition range x≤0.22. The concentration dependence of the magnetic moment per 3d atom exhibits a broad maximum at around x=0.05. The low value of the high field susceptibility for low x reflects a strong ferromagnetic state. The Curie temperature and the spin-wave stiffness constant decrease with increasing x. These magnetic data imply a change in the magnetic state from the strong to the weak ferromagnetic state. Therefore, the initial increase of magnetic moment is qualitatively explained by Friedel's virtual bound state model.

KW - Magnetic measurements

KW - Magnetically ordered materials

KW - Rare earth compounds

KW - Transition metal compounds

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