Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Magnonic Crystal with Strips of Magnetic Nanoparticles: Modeling and Experimental Realization via a Dip-coating Technique

Version 1 : Received: 30 September 2021 / Approved: 30 September 2021 / Online: 30 September 2021 (16:22:49 CEST)

How to cite: Lazcano-Ortiz, Z.; Ordóñez-Romero, C.L.; Domínguez-Juárez, J.L.; Monsivais, G.M.; Quintero-Torres, R.; Matatagui, D.; Qureshi, N.; Kolokoltsev, O. Magnonic Crystal with Strips of Magnetic Nanoparticles: Modeling and Experimental Realization via a Dip-coating Technique. Preprints 2021, 2021090529 (doi: 10.20944/preprints202109.0529.v1). Lazcano-Ortiz, Z.; Ordóñez-Romero, C.L.; Domínguez-Juárez, J.L.; Monsivais, G.M.; Quintero-Torres, R.; Matatagui, D.; Qureshi, N.; Kolokoltsev, O. Magnonic Crystal with Strips of Magnetic Nanoparticles: Modeling and Experimental Realization via a Dip-coating Technique. Preprints 2021, 2021090529 (doi: 10.20944/preprints202109.0529.v1).

Abstract

In this article, we show theoretically and experimentally the formation of spin-waves band gaps in a magnonic crystal that was implemented by the deposition of periodic micro-structured strips of magnetite nanoparticles. A theoretical model describing the spectra of the transmitted spin-waves bandgaps is proposed. This is achieved using a simple model based on microwave transmission line theory and considering the presence of micro-structured strips of magnetite nanoparticles on the surface. Such magnonic crystal of equally spaced micro-structured strips of magnetite nanoparticles on the surface of an yttrium iron garnet thin film has been implemented and measured. The periodic micro-structured nanoparticles are deposited on the surface of such yttrium iron garnet single-crystal film grown on a gallium-gadolinium garnet substrate via dip-coating technique. Propagation of magnetostatic surface spin-waves is studied and it is shown that the presence of such periodic structure leads to the formation of spin-wave band gaps in the transmission characteristics. The spin-wave detection has been carried out using a pair of microwave antennas and a vector network analyzer. The results show that the periodic structure formed by the magnetite strips modifies the spectra of the transmitted spin waves producing band gaps.

Keywords

magnonic crystal; spin waves; magnetite nanoparticles

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