二次レーザ支援エタノール中パルスレーザアブレーション法による鉄ナノ構造体の結晶化

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2015/09/01

タイトル(英語): Crystallization of Iron Nanostructures with Secondary-Laser-Assisted Pulsed Laser Ablation in Ethanol Solution

著者名: 石原　隆一（日本大学大学院理工学研究科），相良　拓也（日本大学大学院理工学研究科），胡桃　聡（日本大学理工学部），松田　健一（日本大学理工学部），鈴木　薫（日本大学理工学部）

著者名(英語): Ryuichi Ishihara (Graduate School of Science and Technology, Nihon-University), Takuya Sagara (Graduate School of Science and Technology, Nihon-University), Satoshi Kurumi (College of Science and Technology, Nihon-University), Ken-ichi Matsuda (College of Science and Technology, Nihon-University), Kaoru Suzuki (College of Science and Technology, Nihon-University)

キーワード: 液中パルスレーザアブレーション，磁気集塵，磁性体コア/シェルナノ粒子，磁性体ナノロッド　　pulsed laser ablation in liquid，magnetic dust collection，core/shell magnetic nanoparticle，magnetic nanorods

要約(英語): In this paper, we have investigated the growth technique of graphite-coated nanomagnet particles to apply a sustainable environment technology by millisecond YAG pulsed laser ablation (PLA) method in ethanol solution using Fe bulk-target. To control crystallized forms and/or grain-size of nanomagnet-materials, laser diode (LD) beam was irradiated to the ablation plumes, which were generated by this PLA method. Additionally, magnetic field was applied to the ablation plumes, in order to separate a nanomagnet particle and a non-magnet one. Ablation plumes were observed by high-speed camera images, and they were re-excited by LD laser beam irradiation. In case of magnetic field assist, ablation plumes were attracted to the magnet. This suggested that growth nano-particles had magnetic property. Typical carbon-coated nano-particles, which grown by non-assisted PLA, were observed by TEM images, and these grain sizes were dependent on the pulsed width of PLA source. On the other hand, LD assisted samples showed there were rod-sharped nano-materials, and crystallization of these materials was β-Fe3O4, γ-Fe2O3 surmised by electron diffraction.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.135 No.9 （2015） 特集：サステナブル社会・先端応用へ向けたレーザプロセシング技術

本誌掲載ページ: 1060-1065 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/135/9/135_1060/_article/-char/ja/