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Full-Text Articles in Physics
Novel Half-Metallic And Spin-Gapless Heusler Compounds, Yunlong Jin
Novel Half-Metallic And Spin-Gapless Heusler Compounds, Yunlong Jin
Department of Physics and Astronomy: Dissertations, Theses, and Student Research
This thesis is devoted to experimental studies of Heusler compounds CoFeCrAl, CoFeCrX (X = Si, Ge) and Mn2PtSn. These Heusler alloys present an interesting class of ferromagnetic materials for spintronic applications since they are predicted to be spin gapless semiconductors and have half-metallic properties with 100 % spin polarization at the Fermi level. In this thesis, the structural, magnetic, spin-polarization and electron- transport properties of the fabricated alloys were studied. CoFeCrAl thin films deposited on MgO exhibit nearly perfect epitaxy and a high degree of L21 Heusler order. All considered types of chemical disorder destroy the spin-gapless …
Materials For Giant Spin Hall Effect Devices, Avyaya Jayanthinarasimham
Materials For Giant Spin Hall Effect Devices, Avyaya Jayanthinarasimham
Legacy Theses & Dissertations (2009 - 2024)
Studies presented in this thesis are an effort to control the growth of β W and explore
Temperature Dependence Of Dynamical Spin Injection In A Superconducting Niobium Thin Film, Tyler S. Townsend
Temperature Dependence Of Dynamical Spin Injection In A Superconducting Niobium Thin Film, Tyler S. Townsend
Honors Undergraduate Theses
Spintronics is a research field that focuses on the manipulation of the quantum mechanical spin of charge carriers in solid state materials for future technological applications. Creating large spin currents with large relaxation times is sought after in the field of spintronics which may be aided by combining spintronics with superconductivity. This thesis provides a phenomological study of the effective change in ferromagnetic resonance linewidth, by dynamical spin injection into a permalloy-copper-niobium tri-layer in the superconducting state. The ferromagetic resonance linewidth was measured from 2-14 K. It was observed that there was a change in the behavior of the resonance …