Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Ferromagnetic Metals"”.
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Resistivity anomalies for ferromagnetic metals at Curie points
… have investigated the resistivity anomalies of ferromagnetic metals at the Curie point using the itinerant model. The nature of these resistivity anomalies is related to phase transitions of second kind. Current theory describing these anomalies is based on the localized model of the magnetic …
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Preparation and Characterization of Magnetic Nanocomposite in a Polymer Matrix By Ion Implantation
… The scope of the research is to induce ferromagnetic metals into a polymer matrix and perform magnetic and electrical characterization on the material. The addition of the ferromagnetic metals should enhance the magneto resistance of the material and also produce semiconductor behavior. …
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Characterization of ferromagnetic saturation at 4.2K of selected bulk rare earth metals for compact high-field superconducting cyclotrons
The saturation magnetization of the rare earth ferromagnetic metals gadolinium and holmium was investigated. Cylindrical samples were placed in a superconducting test magnet and induced magnetic field measured at various applied fields. Data was obtained with Hall sensors mounted at the tips of the …
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Decoherence of Transverse Electronic Spin Current in Magnetic Metals
… moments. The great interest in devices based on ferromagnetic metals generated intensive theoretical and experimental studies on the basic physics of spin currents for the last few decades. Of particular interest recently is the so-called "pure" electronic spin current, which is carried by …
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Induction Heating of Aluminum Cookware
… when trying to head low-resistivity, non-ferromagnetic metals such as aluminum and copper, which are commonly used for cookware in several societies. The lack of ferromagnetic properties, resulting in no hysteresis dissipation, and low resistivity of such metals results in an impractically …
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Quantum phase transitions in disordered magnets
… in paper III, that the composition-driven ferromagnetic-toparamagnetic quantum phase transition in Sr₁₋ₓCaₓ RuO₃ is smeared. When individual spatial regions cannot order but fluctuate slowly, the phase transition is characterized by strong singularities in the quantum Griffiths phase. In …
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Heat, Charge and Spin Transport of Thin Film Nanostructures
… thermopower and thermal conductivity of unique ferromagnetic metals. We observe improved thermopower due to the ultra-low damping of the magnon system. For spintronic and spin caloritronic applications, having a low damping is important for device engineering and allows for long spin lifetimes. …
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Optically induced ferro- and antiferromagnetic dynamics in the rare-earth metal dysprosium
… mechanisms have been primarily performed on ferromagnetic metals. Ferromagnetic dynamics bases on transfer of the conserved angular momentum connected with atomic magnetic moments out of the parallel aligned magnetic system into other degrees of freedom. In this thesis the so far rarely …
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Novel materials for magnetic tunnel junctions
… tunnel junctions (MTJs). MTJs consist of two ferromagnetic layers separated by a thin (~2nm) insulating layer, usually amorphous Al2O3. The resistance of the structure depends on the relative orientation of the magnetizations of the ferromagnetic electrodes. The normalized change in resistance …
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Fully Distributed Multi-Material Magnetic Sensing Structures for Multiparameter DAS Applications
… optic distributed acoustic sensing (DAS) scheme. Ferromagnetic nickel and Metglas® were dispersed internally within a fiber optic preform and then drawn on an in-house fiber optic draw tower to lengths in the kilometers. Due to the close proximity of the ferromagnetic metals and fiber optic core, …