Effect of 50-keV proton irradiation on the magnetism of a Fe 66Ni34 Invar alloy

M. Matsushita; Y. Matsushima; T. Uruga; R. Ishigami; A. Iwase

doi:10.1016/j.jmmm.2012.12.043

Effect of 50-keV proton irradiation on the magnetism of a Fe ₆₆Ni₃₄ Invar alloy

M. Matsushita, Y. Matsushima, T. Uruga, R. Ishigami, A. Iwase

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

5 Citations (Scopus)

Abstract

The magnetism of Fe-Ni Invar alloys is very sensitive to the lattice constant, stress, and the number of nearest-neighbor Fe-Fe atomic pairs. Ion irradiation is a useful tool to alter the local atomic structure of a given material. Therefore, the effects of low-energy and light-ion irradiation on the magnetism of a Fe₆₆Ni₃₄ Invar alloy were investigated in this study. The Fe₆₆Ni₃₄ Invar alloy was irradiated with 50-keV protons at a fluence of 1×10¹⁵ ions/cm² at room temperature. The Curie temperature was found to increase from 465 K (before irradiation) to 535 K (after irradiation). The X-ray absorption analysis of the fine structure of the alloy revealed that irradiation had no effect on the atomic structures surrounding Fe and Ni.

Original language	English
Pages (from-to)	13-17
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	333
DOIs	https://doi.org/10.1016/j.jmmm.2012.12.043
Publication status	Published - May 2013

Keywords

Curie temperature
Fe-Ni
Invar alloy
Ion irradiation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2012.12.043

Cite this

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title = "Effect of 50-keV proton irradiation on the magnetism of a Fe 66Ni34 Invar alloy",

abstract = "The magnetism of Fe-Ni Invar alloys is very sensitive to the lattice constant, stress, and the number of nearest-neighbor Fe-Fe atomic pairs. Ion irradiation is a useful tool to alter the local atomic structure of a given material. Therefore, the effects of low-energy and light-ion irradiation on the magnetism of a Fe66Ni34 Invar alloy were investigated in this study. The Fe66Ni34 Invar alloy was irradiated with 50-keV protons at a fluence of 1×1015 ions/cm2 at room temperature. The Curie temperature was found to increase from 465 K (before irradiation) to 535 K (after irradiation). The X-ray absorption analysis of the fine structure of the alloy revealed that irradiation had no effect on the atomic structures surrounding Fe and Ni.",

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T1 - Effect of 50-keV proton irradiation on the magnetism of a Fe 66Ni34 Invar alloy

AU - Matsushita, M.

AU - Matsushima, Y.

AU - Uruga, T.

AU - Ishigami, R.

AU - Iwase, A.

PY - 2013/5

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AB - The magnetism of Fe-Ni Invar alloys is very sensitive to the lattice constant, stress, and the number of nearest-neighbor Fe-Fe atomic pairs. Ion irradiation is a useful tool to alter the local atomic structure of a given material. Therefore, the effects of low-energy and light-ion irradiation on the magnetism of a Fe66Ni34 Invar alloy were investigated in this study. The Fe66Ni34 Invar alloy was irradiated with 50-keV protons at a fluence of 1×1015 ions/cm2 at room temperature. The Curie temperature was found to increase from 465 K (before irradiation) to 535 K (after irradiation). The X-ray absorption analysis of the fine structure of the alloy revealed that irradiation had no effect on the atomic structures surrounding Fe and Ni.

KW - Curie temperature

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KW - Ion irradiation

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