Itinerant-electron metamagnetism and onset of weak ferromagnetism in laves phase Y(Co1-xGax)2 compounds

M. Ohta; K. Fukamichi; A. Fujita; H. Saito; T. Goto

doi:10.1016/j.jmmm.2004.11.492

Itinerant-electron metamagnetism and onset of weak ferromagnetism in laves phase Y(Co_1-xGa_x)₂ compounds

M. Ohta, K. Fukamichi, A. Fujita, H. Saito, T. Goto

ENG - Materials Science

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

2 Citations (Scopus)

Abstract

In Y(Co_1-xGa_x)₂ quasi-binary compounds, the metamagnetic transition magnetic field becomes lower with increasing x, and the weak itinerant-electron ferromagnetic state is established in analogy with Y(Co_1-xAl_x)₂. The magnetic moment and the Curie temperature are smaller than those of Y(Co _1-xAl_x)₂. On the other hand, no evidence of onset of the ferromagnetic state was confirmed in Y(Co _1-xSi_x)₂ compounds with below x=0.15. The difference in the lattice expansion depending on the substitutional elements brings about the difference in the 3d-band narrowing and the onset of ferromagnetic state.

Original language	English
Pages (from-to)	431-434
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	290-291 PART 1
DOIs	https://doi.org/10.1016/j.jmmm.2004.11.492
Publication status	Published - 2005 Apr 1

Keywords

Itinerant-electron metamagnetic transition
Weak ferromagnetism
YCo

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2004.11.492

Cite this

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title = "Itinerant-electron metamagnetism and onset of weak ferromagnetism in laves phase Y(Co1-xGax)2 compounds",

abstract = "In Y(Co1-xGax)2 quasi-binary compounds, the metamagnetic transition magnetic field becomes lower with increasing x, and the weak itinerant-electron ferromagnetic state is established in analogy with Y(Co1-xAlx)2. The magnetic moment and the Curie temperature are smaller than those of Y(Co 1-xAlx)2. On the other hand, no evidence of onset of the ferromagnetic state was confirmed in Y(Co 1-xSix)2 compounds with below x=0.15. The difference in the lattice expansion depending on the substitutional elements brings about the difference in the 3d-band narrowing and the onset of ferromagnetic state.",

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author = "M. Ohta and K. Fukamichi and A. Fujita and H. Saito and T. Goto",

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T1 - Itinerant-electron metamagnetism and onset of weak ferromagnetism in laves phase Y(Co1-xGax)2 compounds

AU - Ohta, M.

AU - Fukamichi, K.

AU - Fujita, A.

AU - Saito, H.

AU - Goto, T.

PY - 2005/4/1

Y1 - 2005/4/1

N2 - In Y(Co1-xGax)2 quasi-binary compounds, the metamagnetic transition magnetic field becomes lower with increasing x, and the weak itinerant-electron ferromagnetic state is established in analogy with Y(Co1-xAlx)2. The magnetic moment and the Curie temperature are smaller than those of Y(Co 1-xAlx)2. On the other hand, no evidence of onset of the ferromagnetic state was confirmed in Y(Co 1-xSix)2 compounds with below x=0.15. The difference in the lattice expansion depending on the substitutional elements brings about the difference in the 3d-band narrowing and the onset of ferromagnetic state.

AB - In Y(Co1-xGax)2 quasi-binary compounds, the metamagnetic transition magnetic field becomes lower with increasing x, and the weak itinerant-electron ferromagnetic state is established in analogy with Y(Co1-xAlx)2. The magnetic moment and the Curie temperature are smaller than those of Y(Co 1-xAlx)2. On the other hand, no evidence of onset of the ferromagnetic state was confirmed in Y(Co 1-xSix)2 compounds with below x=0.15. The difference in the lattice expansion depending on the substitutional elements brings about the difference in the 3d-band narrowing and the onset of ferromagnetic state.

KW - Itinerant-electron metamagnetic transition

KW - Weak ferromagnetism

KW - YCo

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