Multi-dimensional magnetic modification and applications by energitic ion beam irradiation

2016 Fiscal Year Final Research Report

• Project/Area Number: 26390011
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nanostructural physics
• Research Institution: Osaka Prefecture University
• Principal Investigator: Matsui Toshiyuki 大阪府立大学, 21世紀科学研究機構, 教授 (20219372)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 磁気改質 / 3次元パターニング / 一次磁気相転移 / イオンビーム照射効果 / クラスターイオンビーム / XMCD

Outline of Final Research Achievements

Iron-rhodium ordered alloy has a first-order phase transition from the lowtemperature antiferromagnetic (AF) phase to the high-temperature ferromagnetic (FM) phase near room temperature. We have reported that the ion beam irradiation at various energies can induce the FM state in FeRh bulk and film samples below room temperature at which they are originally in the AF state.
We have succeedded to fabricate micro scale magnetic patterns using the ion microbeam technique, hereby novel applications such as for patterned media may be feasible. We also realized that ferromagnetic layered structure has been made at sub-surface of the antiferromagnetic FeRh bulk samples by high energy He ion beam irradiation. The possibility of two and three dimensional magnetic patterning for the FeRh thin films and bulks by high and low energy ion beam as well as by cluster ion beam irradiation has been shown.

Free Research Field

材料物性学