Effects of B2O3 on the Growth, Structural, and Magneto-Optical Properties of Yttrium Iron Garnet Single-Crystal Fibers
Jun Young Hong, Dolendra Karki, Soumya Sridar, Paul Ohodnicki
TL;DR
This study shows that adding B2O3 during the growth of YIG single-crystal fibers improves fabrication efficiency and enhances their structural and magneto-optical properties.
Contribution
The novel use of B2O3 in LHPG growth improves YIG fiber quality and scalability for photonic and sensing applications.
Findings
B2O3 lowers growth temperatures and improves fiber fabrication efficiency.
B2O3-assisted fibers show increased saturation magnetization and better [111] crystal alignment.
Faraday rotation measurements confirm improved phase purity and crystallographic quality in B2O3-assisted samples.
Abstract
This study explores the fabrication of yttrium iron garnet (YIG) single crystal fibers using the laser heated pedestal growth (LHPG) method with the experimental addition of B2O3. The incorporation of B2O3 facilitates the fiber fabrication process by lowering the required growth temperatures and likely modifying melt viscosity behavior, consistent with the established fluxing behavior of B2O3 and the comparative viscosity trend observed in the TMA–VFT analysis, thereby improving process efficiency while maintaining fiber quality. Structural characterization using EBSD and SC-XRD reveals a transition from polycrystalline to single-crystal behavior, with improved alignment along the [111] direction without altering the garnet structure. Magnetic measurements show increases in saturation magnetization in B2O3-assisted fibers. Three-dimensional anisotropy energy modeling, based on…
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Taxonomy
TopicsMagneto-Optical Properties and Applications · Advanced Fiber Optic Sensors · Magnetic Properties and Synthesis of Ferrites