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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 472 for “"Magnetism"”.
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Recent lunar magnetism
The magnetization of young lunar samples (<1.5 Ga) is a mystery because common sources of magnetic fields (e.g. core dynamo and long-lived impact plasma fields) have not been present within the last 1.5 Ga. To better characterize the source of magnetization in young lunar samples, we conducted …
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Magnetism, Structure and their Interactions
In my work, magnetic and structural transitions of three categories of compounds are investigated by density functional calculations under local spin density approximation (LSDA). The first compound is Rh2MnGe with full Heusler structure at ambient condition. However, the structure is unstable at …
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Magnetism in Nickel - Copper Alloys
Made available in DSpace on 2015-05-12T21:41:04Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7013457.PDF: 6231299 bytes, checksum: 9e2c0fc27f078bd265b5e3f33b4f8e03 (MD5) Previous issue date: 1969
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Magnetism in Iron - Aluminum Alloys
Made available in DSpace on 2014-12-12T01:04:04Z (GMT). No. of bitstreams: 1 7207022.pdf: 7127939 bytes, checksum: 86acf1453fd57fc1f0cd52a553fd187d (MD5) Previous issue date: 1971
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Magnetism in crystalline rare-earth compounds
In this thesis we investigate the magnetism of a selection of crystalline mate- rials that display fascinating macroscopic properties, largely due to the complex behaviour of rare-earth ions. The technique of choice is diffraction; shown to pro- vide the most lucid of results in this field of …
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Magnetism in strongly correlated electron systems
… which I consider two very different examples of magnetism in strongly correlated electron systems, the high-T$\sb{c}$ materials and heavy fermions.
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Magnetism of anthropogenic airborne particulate matter
The global burden of disease associated with ambient particulate matter (PM<sub>2.5</sub>) pollution is the leading threat to life expectancy according to the Air Quality Life Index (AQLI) 2023 report. The study of airborne PM is key to understanding both its source, and its impact on human health. …
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Rotation and magnetism in massive stars
Rotation has a number of important effects on the evolution of stars. Apart from structural changes because of the centrifugal force, turbulent mixing and meridional circulation can dramatically affect a star's chemical evolution. This leads to changes in the surface temperature and luminosity as …
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Frustrated Magnetism in Strongly Correlated Electron Systems
A deep understanding of magnetism is essential for its application in magnetic semiconductors, spintronic devices and unconventional superconductors. In this work, we study magnetic structures and their corresponding excitations in several strongly correlated electron systems, where exotic …
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First-principles investigation of transport and magnetism
… structures only. The following chapters explore magnetism. Starting with the discussion of the pervoskite compound MnSeO₃, we found our results to be predicting its true magnetic ground state order. The study of its energetics and electronic structure, in comparison to its non-magnetic analogue …
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Quantum magnetism in cerium-based binary compounds
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-08-01
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Coexistence and Competition of Superconductivity and Magnetism
… and competition of superconductivity and magnetism. Initially, an overview of the subject is given with descriptions of various compounds which show unusual forms of both phenomena. This is followed by an analysis of the basic theoretical concepts behind both superconductivity and …
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Studies in Magnetism and Superconductivity under Extreme Pressure
Abstract Studies of superconductivity, magnetism and structure under pressure have made important contributions to furthering our understanding of the physical properties of materials. High pressure can change the superconducting transition temperature, create new superconductors, change the …
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Nanophotonics for dark materials, filters, and optical magnetism
<p>Research on nanophotonic structures for three application areas is described, a near perfect optical absorber based on a graphene/dielectric stack, an ultraviolet bandpass filter formed with an aluminum/dielectric stack, and structures exhibiting homogenizable magnetic properties at infrared …
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On the study of analogues in cosmic magnetism
The dynamo process, by which the strength of the magnetic field is amplified, is still not well understood and, in part, requires an understanding of the behaviour of the plasma fluid (i.e. a charged fluid) in different conditions. It has long been known that charged and non-charged fluids display …
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The origin of remanent magnetism in sedimentary rocks
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1960.
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Magnetism in Two-Dimensional van der Waals Materials
… quantum materials. For over a decade, however, magnetism was noticeably absent from van der Waals materials. In this thesis, I present experiments on one of the first families of 2D magnets, the insulating chromium trihalides (CrX3), including CrI3 and CrCl3. These results were enabled by …
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Stoner magnetism and Berry phase in quantum materials
Two-dimensional solids often exhibit carrier bands with Berry phase in 𝑘 space, resulting in carriers behaving like spinning objects and generating orbital magnetization in position space. This thesis explores the impact of orbital magnetization arising in this way on the correlated electron …
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Surface and Interface Magnetism in Nanostructures and Thin Films
… the new fundamental physics they may display. Magnetism at the nanoscale is dominated by size and surface effects which combined with other media lead to new spin dynamics and interfacial coupling phenomena. These new properties may prove to be useful for optimizing sensors and devices, …
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METASTABLE DEEXCITATION SPECTROSCOPY: A NEW PROBE OF SURFACE MAGNETISM
… constitute a method for probing surface magnetism with unparalleled surface specificity. In addition to discussing the physics of the metastable/surface interaction and the results obtained, the theoretical background and a perspective of surface spectroscopies are provided in sections on …
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