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Showing 1 to 15 of 15 for “"Yttrium iron garnet"”.
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Properties of off stoichiometric yttrium iron garnet
… shows that high-quality epitaxial garnet phase is formed on GGG substrates. However, RSM results show that the off-stoichiometric YIG film on (111) GGG substrates can remain fully strained in plane with thickness from 23 nm to 74 nm; while the samples on (001) GGG substrates show …
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Nanometer-thick yttrium iron garnet film development and spintronics-related study
… there has been a considerable interest in using yttrium iron garnet (Y3Fe5O12, YIG) materials for magnetic insulator-based spintronics studies. This interest derives from the fact that YIG materials have very low intrinsic damping. The development of YIG-based spintronics demands YIG films that …
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Sol-gel processing of RxY3-xAlyFe5-yO12 magneto-optical films
… of rare-earth and aluminum substituted yttrium-iron garnet (RxY3-xAlyFe5-yO12, R,Al:YIG), where R= Bi, Gd, Er, Ho. Detailed are the processing conditions, parameters and results leading to R,Al:YIG films with MO response. Success was attained with a 0.25M Gd,Al:YIG solution spin coated …
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Growth-Induced Cation Order and Magnetic Anisotropy Engineering in Iron Garnet Thin Films
… and magnetic random access memory (MRAM). While garnet materials have long been studied for these applications, they have faced challenges in becoming adoptable technologies. However, with advanced research techniques and a deeper understanding of material behaviors, magnetic garnets are …
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Nanoparticle-chiral nematic liquid crystal composites
… The first phase seeks to produce magnetooptical yttrium iron garnet (YIG) nanoparticles with an average diameter on the order of 15-50 nm. It was determined that a commercially available yttrium iron oxide nanopowder (purchased from Sigma-Aldrich Corporation) exhibited YIG and orthorhombic …
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Spin wave characterization in a 1D YIG magnonic crystal
… measured in a one-dimensional (1D) yttrium iron garnet (YIG) magnonic crystal using time-resolved Brillouin light scattering (TR-BLS) measurements. Magnonic crystals are a promising candidate to aid in developing spin-based devices that exploit the spin of the electron since magnonic …
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Spin Shot Noise measurement
… measure the longitudinal spin Seebeck effect in yttrium iron garnet (YIG) on gadolinium gallium garnet (GGG). Measurements have shown indications at low temperatures of a contribution to the spin Seebeck voltage noise in the inverse spin Hall detector that is present when the magnetization of the …
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The Interplay of Spin, Charge, and Heat: From Metal/Insulator Heterostructures to Perovskite Bilayers
… (Cr) thin films on a bulk polycrystalline yttrium-iron-garnet (YIG) substrate. This project analyzed the spin transport in the Cr films versus thickness via the longitudinal spin Seebeck effect (LSSE). This research revealed a complex thickness dependence of the spin-to-charge conversion …
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Domain Wall Based Magnonics in Iron Garnet
… efficiency and processing speed, materials like iron garnets, ferrimagnetic insulators with tunable magnetic properties, are essential. Key magnetic parameters, including saturation magnetization, perpendicular magnetic anisotropy, coercivity, and Gilbert damping, can be tailored through …
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Quantum transport in gapped graphene
… proximity coupled to the ferrimagnetic insulator yttrium iron garnet ($\text{Y}_{3}\text{Fe}_{5}\text{O}_{12}$ or YIG). The first part describes in detail the pulse laser deposition of atomically flat YIG thin films onto single crystal gadolinium gallium garnet with a magnetization of 144 emu …
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Pulsed Laser Deposited Iron Garnet Thin Films for Spintronics
… spintronic memories and demonstrate growth of iron garnet superlattices with layering at a sub unit cell scale. Iron garnet films are suitable for next generation spintronic memories because of their low Gilbert damping and their growth with perpendicular magnetic anisotropy (PMA) which promote …
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Microstructural Analysis of Garnet-Heavy Metal Heterostructures
Rare earth iron garnets (REIGs) are a class of ferrimagnetic insulators desirable for their tunable magnetic properties. Saturation magnetization, perpendicular magnetic anisotropy (PMA), coercivity, and Gilbert damping are just a few characteristics that can be altered via elemental substitution …
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Nonlinear spin waves in magnetic thin films - foldover, dispersive shock waves, and spin pumping
… of spin waves and the spin Seebeck effect in yttrium iron garnet (YIG)/Pt bi-layer structures are studied in this thesis and are reported in detail in Chapters 4-7. In the fourth chapter, the first observation of foldover effect of nonlinear eigenmodes in feedback ring systems is reported. The …
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The design and realisation of electronically tunable dielectric resonator microstrip filters
… by electronically tuned filters employing yttrium iron garnet (YIG) resonators. An alternative solution to this problem is to utilise high-Q dielectric resonators (DRs) in-conjunction with an appropriate tuning mechanism to realise tunable filters. DRs can provide unloaded Q-factors …
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Magnon and phonon thermal transport in oxides
… temperature dependences. The second topic is on yttrium-iron-garnet, where I hope to understand the magnon-phonon thermal transport inside the YIG crystal, and also to understand the electron-magnon transport across metal-YIG interfaces. In particular, I would like to see how different deposition …