Open AccessMFM and PEEM observation of micrometre‐sized magnetic dot arrays fabricated by ion‐microbeam irradiation in FeRh thin films
Author(s) -
Aikoh K.,
Tohki A.,
Matsui T.,
Iwase A.,
Satoh T.,
Takano K.,
Kohka M.,
Saitoh Y.,
Kamiya T.,
Ohkochi T.,
Kotsugi M.,
Nakamura T.,
Kinoshita T.
Publication year - 2012
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049511054057
Subject(s) - microbeam , materials science , ferromagnetism , irradiation , magnetization , magnetic force microscope , thin film , magnetic circular dichroism , ion , condensed matter physics , optics , nanotechnology , chemistry , magnetic field , physics , nuclear physics , quantum mechanics , spectral line , organic chemistry , astronomy
FeRh thin films were irradiated with a 10 MeV iodine ion microbeam to produce micrometre‐scale ferromagnetic microstructures by modifying the local magnetic character from antiferromagnetism to ferromagnetism using ion‐microbeam irradiation. Two‐dimensional magnetic dot arrays of dimensions ∼2 µm × 4 µm as well as 10 µm × 10 µm were successfully produced on the FeRh surface, which was confirmed by magnetic force microscopy (MFM). The results of photoemission electron microscopy (PEEM) 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.