Micrometer-sized magnetic patterning of FeRh films using an energetic ion microbeam

高エネルギーイオンマイクロビームによる鉄ロジウム合金薄膜のマイクロサイズ磁気パターニング

藤田 直樹*; 松井 利之*; 小杉 晋也*; 佐藤 隆博; 齋藤 勇一; 高野 勝昌; 江夏 昌志; 神谷 富裕; 関 修平*; 岩瀬 彰宏*

Fujita, Naoki*; Matsui, Toshiyuki*; Kosugi, Shinya*; Sato, Takahiro; Saito, Yuichi; Takano, Katsuyoshi; Koka, Masashi; Kamiya, Tomihiro; Seki, Shu*; Iwase, Akihiro*

FeRh thin films were irradiated with a focused 10 MeV I 2 2 m ion microbeam at intervals of several m. After the irradiations, the magnetic state at the surface was observed by a magnetic force microscopy (MFM). The micrometer-sized regions which were irradiated with the microbeam show ferromagnetic, and the unirradiated regions remain antiferromagnetic. The present result indicates that the energetic ion microbeam can be used as a tool to produce the micrometer-sized modulation of lateral magnetic state of FeRh films.