Morphological change in FePt nanogranular films induced by irradiation with 100 keV He ions

S. Matsumura; T. Horiuchi; K. Yasuda; K. Kaneko; M. Watanabe; T. Masumoto

doi:10.1016/j.scriptamat.2005.04.044

Morphological change in FePt nanogranular films induced by irradiation with 100 keV He ions

S. Matsumura, T. Horiuchi, K. Yasuda, K. Kaneko, M. Watanabe, T. Masumoto

Quantum Sciences of Materials

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

7 Citations (Scopus)

Abstract

We have investigated the effects of He-ion irradiation on structures of FePt nanoparticles dispersed in thin films with amorphous Al₂O ₃ matrix. The coarsening of FePt nanoparticles is suppressed under irradiation with 100 keV He⁺ ions at an elevated temperature, such as 923 K. The delay of particle growth is also recognized in the post-irradiation annealing. On the other hand, He-irradiation is of little assistance in promoting L1₀ ordering in the nanogranular films at a temperature as low as 573 K.

Original language	English
Pages (from-to)	441-445
Number of pages	5
Journal	Scripta Materialia
Volume	53
Issue number	4
DOIs	https://doi.org/10.1016/j.scriptamat.2005.04.044
Publication status	Published - Aug 2005

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2005.04.044

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@article{c2872254d3544911a004e595e64ff071,

title = "Morphological change in FePt nanogranular films induced by irradiation with 100 keV He ions",

abstract = "We have investigated the effects of He-ion irradiation on structures of FePt nanoparticles dispersed in thin films with amorphous Al2O 3 matrix. The coarsening of FePt nanoparticles is suppressed under irradiation with 100 keV He+ ions at an elevated temperature, such as 923 K. The delay of particle growth is also recognized in the post-irradiation annealing. On the other hand, He-irradiation is of little assistance in promoting L10 ordering in the nanogranular films at a temperature as low as 573 K.",

author = "S. Matsumura and T. Horiuchi and K. Yasuda and K. Kaneko and M. Watanabe and T. Masumoto",

note = "Funding Information: This work was partly supported by Special Coordination Funds for Promoting Science and Technology on “Nanohetero Metallic Materials” as well as Grants-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology.",

year = "2005",

month = aug,

doi = "10.1016/j.scriptamat.2005.04.044",

language = "English",

volume = "53",

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journal = "Scripta Materialia",

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T1 - Morphological change in FePt nanogranular films induced by irradiation with 100 keV He ions

AU - Matsumura, S.

AU - Horiuchi, T.

AU - Yasuda, K.

AU - Kaneko, K.

AU - Watanabe, M.

AU - Masumoto, T.

N1 - Funding Information: This work was partly supported by Special Coordination Funds for Promoting Science and Technology on “Nanohetero Metallic Materials” as well as Grants-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology.

PY - 2005/8

Y1 - 2005/8

N2 - We have investigated the effects of He-ion irradiation on structures of FePt nanoparticles dispersed in thin films with amorphous Al2O 3 matrix. The coarsening of FePt nanoparticles is suppressed under irradiation with 100 keV He+ ions at an elevated temperature, such as 923 K. The delay of particle growth is also recognized in the post-irradiation annealing. On the other hand, He-irradiation is of little assistance in promoting L10 ordering in the nanogranular films at a temperature as low as 573 K.

AB - We have investigated the effects of He-ion irradiation on structures of FePt nanoparticles dispersed in thin films with amorphous Al2O 3 matrix. The coarsening of FePt nanoparticles is suppressed under irradiation with 100 keV He+ ions at an elevated temperature, such as 923 K. The delay of particle growth is also recognized in the post-irradiation annealing. On the other hand, He-irradiation is of little assistance in promoting L10 ordering in the nanogranular films at a temperature as low as 573 K.

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U2 - 10.1016/j.scriptamat.2005.04.044

DO - 10.1016/j.scriptamat.2005.04.044

M3 - Article

AN - SCOPUS:19944420461

SN - 1359-6462

VL - 53

SP - 441

EP - 445

JO - Scripta Materialia

JF - Scripta Materialia

IS - 4

ER -

Morphological change in FePt nanogranular films induced by irradiation with 100 keV He ions

Abstract

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