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Fabrication of elongated YIG nanostructures by the sol-gel method supported on alumina membranes
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Fabrication of elongated YIG nanostructures by the sol-gel method supported on alumina membranes
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Journal Article
Fabrication of elongated YIG nanostructures by the sol-gel method supported on alumina membranes
2023
Overview
This work presents a new methodology for fabrication of membrane-assisted elongated YIG nanostructures through the sol-gel method using low-cost materials, and the estimation of the average size of the geometries formed within the pores through ferromagnetic resonance measurements. A precursor solution was deposited on the internal surface of porous aluminum oxide membrane, using an assembly consisting of a vacuum system coupled to an apparatus, which assists in the entry of the used precursor solution, breaking the barriers related to the existing surface tension, with subsequent heat treatment to form the single phase of yttrium iron garnet (YIG). The data collected by X-ray diffraction and Raman spectroscopy indicated this result. The study of the contact angle of the precursor solution and the alumina template indicated great compatibility, an angle of 35.4°. SEM analysis showed that elongated structures were deposited inside the pore’s walls, with different lengths up to 3 micrometers and the EDS analysis showed the presence of the main elements of the YIG phase. The Kittel’s equation and FMR spectral data were used to estimate the mean size of the elongated nanostructures. We found six different size categories with 1856, 1768, 1661, 1588, 1570, 1498 nm . The methodology proved to be efficient for the characterization of elongated YIG nanostructures, becoming a perspective of future applications.
Graphical Abstract
Highlights
Setup for the infiltration of the alumina membrane with the YIG precursor was proposed.
Elongated YIG structures were obtained with diverse potential applications.
The FMR was used to estimate the mean size of elongated YIG structures.
Publisher
Springer US,Springer Nature B.V
Subject
