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

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Abstract

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. © 2012 International Union of Crystallography Printed in Singapore - All rights reserved.

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Aikoh, K., Tohki, A., Matsui, T., Iwase, A., Satoh, T., Takano, K., … Kinoshita, T. (2012). MFM and PEEM observation of micrometre-sized magnetic dot arrays fabricated by ion-microbeam irradiation in FeRh thin films. Journal of Synchrotron Radiation, 19(2), 223–226. https://doi.org/10.1107/S0909049511054057

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