MFM and PEEM observation of micrometre-sized magnetic dot arrays fabricated by ion-microbeam irradiation in FeRh thin films

FeRh薄膜にイオンマイクロビーム照射により作製されたミクロンサイズの磁性ドットアレイのMFMとPEEMによる観察

愛甲 一馬*; 唐木 淳志*; 松井 利之*; 岩瀬 彰宏*; 佐藤 隆博; 高野 勝昌*; 江夏 昌志; 齋藤 勇一; 神谷 富裕; 大河内 拓雄*; 小嗣 真人*; 中村 哲也*; 木下 豊彦*

Aiko, Kazuma*; Toki, Atsushi*; Matsui, Toshiyuki*; Iwase, Akihiro*; Sato, Takahiro; Takano, Katsuyoshi*; Koka, Masashi; Saito, Yuichi; Kamiya, Tomihiro; Okochi, Takuo*; Kotsugi, Masato*; Nakamura, Tetsuya*; Kinoshita, Toyohiko*

FeRh thin films were irradiated with 10 MeV iodine ion microbeam to produce the lateral magnetic modification in micron-meter scale. Two-dimensional magnetic dot arrays with the dimension of approximately 24 m as well as 1010 m were successfully produced on the FeRh surface, which was observed by magnetic force microscopy. The results of the photoelectron emission microscopy combined with X-ray magnetic circular dichroism reveal that the easy axis of the magnetization of the ion beam irradiated ferromagnetism in the FeRh thin films lies in the film planes along the 001 direction of the MgO substrates.