Laser micro-processing as a tool for constructing insulator-based magnonic crystal

Daimon, Shunsuke*; Iguchi, Ryo*; Uchida, Kenichi*; Saito, Eiji

Y $_{3}$ Fe $_{5}$ O $_{12}$ (YIG) films with a periodic-antidot-array structure fabricated by laser microprocessing is shown to exhibit clear characteristics of two-dimensional (2D) magnonic crystals. The experimental results demonstrate that the spin-wave-resonance spectra in the YIG films are modulated by the periodic antidot structure. The frequency and lattice constant dependences of the spectra are well reproduced by a numerical calculation based on magnonic band structures of the 2D magnonic crystals. Since the laser micro-processing is compatible with various thin-film fabrication methods, it can be a powerful tool for constructing magnonic crystals.

Language	:	English
Journal	:	Journal of Physics D; Applied Physics
Volume	:	48
Number	:	16
Pages	:	p.164014_1 - 164014_4
Publication Year/Month	:	2015/04
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Paper URL	:	https://doi.org/10.1088/0022-3727/48/16/164014
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Registration No. : AA20150911
JAEA Abstracts No. : 44000723
Paper Submission No. : 17338

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