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 20 of 48 for “"Stoner"”.
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Stoner magnetism and Berry phase in quantum materials
… spin and valley polarization originating from Stoner instability, such as those seen in moiré graphene and other narrow-band systems. Despite recent advances in the field, these questions remain largely unexplored, and this thesis aims to address this gap in research. Interesting physics arises …
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A Content Analysis of Student Conduct Codes
… and practice (Dannells, 1997; Gehring, 2001; Stoner & Cerminara 1990; Stoner, 2000). The purpose of this study was to analyze student conduct codes to determine the extent to which college and university administrators have adopted Stoner and Cerminara, Gehring, and Pavela's suggestions. This …
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Study of localization and correlation effects in disordered electronic systems
… in the vicinity of magnetic instabilities on the Stoner criterion, Stoner excitations and the spin-wave mode. A macroscopic renormalization group study of the Anderson localization transition is described in chapter 2. The critical behavior of the localization transition and effects of …
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Synthesis and characterization of cobalt nanocrystals
… verify its magnetic behavior in the context of a Stoner-Wohlfarth model of coherent rotation. The problem of preparing crystals of a desired shape and the effect of the crystal shape on its magnetic properties is also addressed. Cobalt nanocrystals are prepared by thermal decomposition of dicobalt …
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Tara
… wants revenge. Allan Washington, one of Tara's stoner friends from college, experiences troubles visited upon him by religious fanatics. Jeremy Harrison once asked Tara out on a date in high school, but was turned down, but he finds a way to "change" that memory, with disastrous results. Michael …
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ADHD, the classroom and music : a case study
… with peers, parents, and teachers (DuPaul, Stoner, 2003). One of the primary goals of behavioural treatment for ADHD is to enable a student to develop adequate levels of self-control (Barkley, 1990; DuPaul & Stoner, 1994). Methods are needed in the classroom, which give the child or …
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Ultracold molecules from ultracold atoms : interactions in sodium and lithium gas
… to strongly-correlated quantum phases such as Stoner model ferromagnetism, Bose mediated Fermi interactions, and Bose-Fermi mixtures are presented as applicable to Na and Li gases. Conclusions are presented regarding the feasibility of producing deeply bound, dipolar NaLi molecules, as well as …
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Historical Realism and Stoic Heroes in the Work of John Williams
… major works of fiction — <em>Butcher’s Crossing, Stoner</em>, and <em>Augustus</em> — are narratively structured around three main characters who embody the tenets of stoic and Emersonian transcendental philosophy, respectively. Williams uses these characters to promote and critique preconceived …
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Hysteresis phenomena of ferromagnetic bodies using the nonlocal exchange energy model
… stabilizes at the saturated solutions of the Stoner-Wohlfarth model. Here, the measure-valued minimizers are eliminated. Next, we examine numerically the problem of a body composed of several unit spheres of ferromagnetic material. We show that a constrained problem that focuses on the …
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The Risky Shift Among Friends and in Arbitrarily Formed Groups
… ten, indicating refusal to take any risk at all. Stoner (1961) arranged for subjects to discuss the 12 issues in groups and discovered that unanimous decisions were usually riskier than the mean of previous individual scores. Furthermore, after discussing the issues, individuals by themselves …
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Magnetic structures and proximity effects in rare-earth / transition metal ferromagnetic and superconductor systems
… results we present a novel model based on the Stoner-Wohlfarth model, which shows that significant inhomogeneity exists at the Ni/Gd interfaces due to the competition between the exchange energies within the system and the Zeeman energy of the applied magnetic field. The experiment and model …
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Ab initio study of magnetic effects at material interfaces .
… based upon a local spin density extension to the Stoner theory of itinerant ferromagnetism and use it to explore the physics of grain boundaries in iron, such as interfacial energies, structures, and magnetic effects. Our results show that magnetism, in addition to driving structural relaxation, …
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Investigating the performance of high viscosity friction reducers used for proppant transport during hydraulic fracturing
… chemical usage by 50% and the ability to stoner operation equipment on location. Finally, this comprehensive investigation addresses up-to-date of using HVFRs challenges and emphasizes necessities for using HVFRs in high TDS fluids"--Abstract, page iv.</p>
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Magnetism, Structure and their Interactions
… compression of the volume, as described by the Stoner model. The last material investigated is CoO using LDSA+U in order to describe the strong Coulombic interaction of the transition metal ion. The pressure induced a magnetic transition, which was discovered in experiments, is explained by the …
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Ultracold Fermi gas with repulsive interactions
… ferromagnetism was studied by simulating the Stoner model with a strongly interacting Fermi gas of ultracold atoms. We observed nonmonotonic behavior of lifetime, kinetic energy, and size for increasing repulsive interactions, which is in good agreement with a mean-field model for the …
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Quantum coherence and magnetism in bosonic and fermionic gases of ultracold atoms
… basic model for ferromagnetism introduced by Stoner. In the second part of the thesis, the coherence properties of a Bose-Einstein condensate (BEC) was studied in a radio frequency induced double-well potential implemented on a microfabricated atom chip. We observed phase coherence between the …
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Search, Discovery, Synthesis and Characterization of Itinerant Magnets Composed of Non-magnetic Constituents
… non-magnetic elements are needed. While the Stoner criterion for band ferromagnetism calls for high density of states at the Fermi level together with strong electron correlations, more conditions are likely at play. A systematic search among 3d systems resulted in the discovery of the first …
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Building the Beast: The Evolution of Mara Salvatrucha (MS-13) From Street Gang to Transnational Criminal Organization
… of Mara Salvatrucha (MS-13) from a social stoner group in Los Angeles to a feared transnational criminal organization (TCO). Through a longitudinal study of literature and opensource materials spanning over 50 years, this study examines suppression and policy reforms enacted in the United …
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Time dependence in fine-particle systems
… magnetisation of a non interacting ensemble of Stoner-Wohlfarth fine particles has been investigated. The particles typically represent the elongated single domain ferromagnetic particles that have widespread application in the magnetic recording industry. The particle ensemble considered …
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