Nanopatterns induced by pulsed laser irradiation on the surface of an Fe-Al alloy and their magnetic properties

Yutaka Yoshida; Kazuya Oosawa; Seiichi Watanabe; Hideo Kaiju; Kenji Kondo; Akira Ishibashi; Kyosuke Yoshimi

doi:10.1063/1.4804363

Nanopatterns induced by pulsed laser irradiation on the surface of an Fe-Al alloy and their magnetic properties

Yutaka Yoshida, Kazuya Oosawa, Seiichi Watanabe, Hideo Kaiju, Kenji Kondo, Akira Ishibashi, Kyosuke Yoshimi

ENG - Materials Science

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

8 Citations (Scopus)

Abstract

We have studied nanopatterns induced by nanosecond pulsed laser irradiation on (111) plane surfaces of a polycrystalline iron-aluminum alloy and evaluated their magnetic properties. Multiple nanosecond pulsed laser irradiation induces a wavelength-dependent surface transformation of the lattice structure from a B2-type to a supersaturated body centered cubic lattice. The selective formation of surface nanopatterns consisting of holes, stripes, polygonal networks, and dot-like nanoprotrusions can be observed. Furthermore, focused magneto-optical Kerr effect measurements reveal that the magnetic properties of the resultant nanostructured region changes from a paramagnetic to a ferromagnetic phase in accordance with the number of laser pulses.

Original language	English
Article number	183109
Journal	Applied Physics Letters
Volume	102
Issue number	18
DOIs	https://doi.org/10.1063/1.4804363
Publication status	Published - 2013 May 6

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title = "Nanopatterns induced by pulsed laser irradiation on the surface of an Fe-Al alloy and their magnetic properties",

abstract = "We have studied nanopatterns induced by nanosecond pulsed laser irradiation on (111) plane surfaces of a polycrystalline iron-aluminum alloy and evaluated their magnetic properties. Multiple nanosecond pulsed laser irradiation induces a wavelength-dependent surface transformation of the lattice structure from a B2-type to a supersaturated body centered cubic lattice. The selective formation of surface nanopatterns consisting of holes, stripes, polygonal networks, and dot-like nanoprotrusions can be observed. Furthermore, focused magneto-optical Kerr effect measurements reveal that the magnetic properties of the resultant nanostructured region changes from a paramagnetic to a ferromagnetic phase in accordance with the number of laser pulses.",

author = "Yutaka Yoshida and Kazuya Oosawa and Seiichi Watanabe and Hideo Kaiju and Kenji Kondo and Akira Ishibashi and Kyosuke Yoshimi",

note = "Funding Information: The authors thank Mr. Melbert Jeem, Dr. Muhammad Rafiq Mirza Bin Julaihi, and Professors Shigeo Yatsu, Tamaki Shibayama, and Norihito Sakaguchi for helpful discussions. We also thank Mr. Yuusuke Nishida, Mr. Junya Wajima, and Mr. Kenji Okubo for their experimental assistance. This research was partially supported by Precursory Research for Embryonic Science and Technology program (PRESTO) from the Japan Science and Technology Agency (JST).",

year = "2013",

month = may,

day = "6",

doi = "10.1063/1.4804363",

language = "English",

volume = "102",

journal = "Applied Physics Letters",

issn = "0003-6951",

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TY - JOUR

T1 - Nanopatterns induced by pulsed laser irradiation on the surface of an Fe-Al alloy and their magnetic properties

AU - Yoshida, Yutaka

AU - Oosawa, Kazuya

AU - Watanabe, Seiichi

AU - Kaiju, Hideo

AU - Kondo, Kenji

AU - Ishibashi, Akira

AU - Yoshimi, Kyosuke

N1 - Funding Information: The authors thank Mr. Melbert Jeem, Dr. Muhammad Rafiq Mirza Bin Julaihi, and Professors Shigeo Yatsu, Tamaki Shibayama, and Norihito Sakaguchi for helpful discussions. We also thank Mr. Yuusuke Nishida, Mr. Junya Wajima, and Mr. Kenji Okubo for their experimental assistance. This research was partially supported by Precursory Research for Embryonic Science and Technology program (PRESTO) from the Japan Science and Technology Agency (JST).

PY - 2013/5/6

Y1 - 2013/5/6

N2 - We have studied nanopatterns induced by nanosecond pulsed laser irradiation on (111) plane surfaces of a polycrystalline iron-aluminum alloy and evaluated their magnetic properties. Multiple nanosecond pulsed laser irradiation induces a wavelength-dependent surface transformation of the lattice structure from a B2-type to a supersaturated body centered cubic lattice. The selective formation of surface nanopatterns consisting of holes, stripes, polygonal networks, and dot-like nanoprotrusions can be observed. Furthermore, focused magneto-optical Kerr effect measurements reveal that the magnetic properties of the resultant nanostructured region changes from a paramagnetic to a ferromagnetic phase in accordance with the number of laser pulses.

AB - We have studied nanopatterns induced by nanosecond pulsed laser irradiation on (111) plane surfaces of a polycrystalline iron-aluminum alloy and evaluated their magnetic properties. Multiple nanosecond pulsed laser irradiation induces a wavelength-dependent surface transformation of the lattice structure from a B2-type to a supersaturated body centered cubic lattice. The selective formation of surface nanopatterns consisting of holes, stripes, polygonal networks, and dot-like nanoprotrusions can be observed. Furthermore, focused magneto-optical Kerr effect measurements reveal that the magnetic properties of the resultant nanostructured region changes from a paramagnetic to a ferromagnetic phase in accordance with the number of laser pulses.

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DO - 10.1063/1.4804363

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VL - 102

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

M1 - 183109

ER -

Nanopatterns induced by pulsed laser irradiation on the surface of an Fe-Al alloy and their magnetic properties

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