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 56 for “"High magnetic field"”.
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High magnetic field study of strongly correlated electron systems
… quantum oscillations in the presence of a strong magnetic field is a signature of Fermi liquid behaviour and can be used in conjunction with complementary experimental techniques to map the Fermi surface of a metal. For metallic states, the Fermi surface plays a central role in the understanding …
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Quantitative magnetization transfer imaging in ultra-high magnetic field (11.7 T).
… magnetization transfer imaging in ultra-high magnetic field (11.7 T).
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High magnetic field quantum oscillation study of Fermi surfaces in bulk unconventional insulators
As a field of study that investigates how microscopic interactions affect macroscopic material properties, condensed matter physics takes great interest in understanding how charge carriers respond to stimuli. A fundamental distinction has therefore existed between conductors and insulators, where …
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Texture development of high-Tc superconductors by application of a high magnetic field
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1995.
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Imaging Glutamate In The Human Brain At Ultra-High Magnetic Field: Advances And Applications
… few options in the medical imaging toolbox are magnetic resonance spectroscopy (MRS) and a recently introduced specialized form of magnetic resonance imaging (MRI) known as glutamate-weighted chemical exchange saturation transfer imaging, or gluCEST. MRS, while providing good specificity at high …
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The Development of Tunnel Diode Oscillators And High Magnetic Field Studies of Unconventional Superconductor UTe2: Unveiling the Phase Diagram And Unconventional Hall Effect
… an extensive investigation of UTe2 under various magnetic field and pressure conditions by utilizing the Tunnel Diode Oscillator (TDO) and electrical transport. The study is primarily divided into two parts. The first part focuses on the utilization of the TDO to establish a magnetic …
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The superconducting properties, composition and microstructure of nanocrystalline $A15\ \textnormal{Nb}_{3}(\textnormal{Al}_{1-x}\textnormal{Ge}_{x})$ superconductors for high magnetic field applications
… superconductors with 0 ≤ x ≤ 1. High-energy ball milling was used to produce disordered nanocrystalline powders from binary compounds and from pure elemental powders. A detailed analysis of powders milled for up to 30 h was performed using X-ray diffraction, differential scanning …
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New features in the phase diagrams of the cuprate high-Tc superconductors mapped using strong magnetic fields
… features in the phase diagrams of the cuprate high-Tc superconductors using high magnetic field electrical transport measurements. These discoveries attempt to address two central questions pertaining to how the physics of the cuprate high-Tc superconductors evolve as a function of both …
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Inferences on the Structure of Aluminosilicate Glasses: A High Resolution Solid-State Silicon-29 and Aluminum-27 Nuclear Magnetic Resonance Study (magic-Angle)
… anorthite-diopside-forsterite were examined by high resolution solid-state silicon-29 and aluminum-27 nuclear magnetic resonance (NMR) spectroscopy. High resolution spectra were obtained at high magnetic field strengths (11.7 and 8.45 Tesla) using magic-angle sample-spinning (MASS) techniques.
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Opto-mechanical design of synchrotron radiation-based far-infrared spectroscopic ellipsometer with strong magnetic-field
… ellipsometer with a strong external magnetic-field capability. Since high magnetic field has enabled major breakthrough in science such instrument will be highly important to the field of condensed matter physics and characterization of advanced electronic materials. This instrument …
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Magnetic Nanoparticles Based on Iron: Synthesis, Characterization, Design, and Application
Magnetic nanoparticles are of great interest for a wide range of applications. This work has focused on three primary forms of iron based nanoparticles and combinations thereof: α-iron, iron oxide, and iron carbide or cementite. The synthesis of several core-shell particles including cementite-iron …
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Design and testing of an electron cyclotron resonance heating ion source for use in high field compact superconducting cyclotrons
… evaluate the feasibility of axial injection of a high brightness beam from an Electron Cyclotron Resonance ion source into a high magnetic field cyclotron. Axial injection from an ion source with high brightness is important to reduce particle losses in the first several turns of acceleration …
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Investigation of the Superconducting Properties of Niobium Radio-Frequency Cavities
… a marked increase of the surface resistance at high rf fields, in absence of field emission. A low temperature "in-situ" baking under ultra-high vacuum has been successfully applied by several laboratories to reduce those losses and improve the cavity's quality factor. Several models have been …
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Magnetic-field- and pressure-tuned phases in LaxPryCa1−x−yMnO3 and Mn3O4: inelastic light scattering studies and single crystal growth
… information—about all the important electronic, magnetic, and lattice degrees of freedom involved in the complex phases and phenomena observed in strongly correlated materials. Also, for the studies presented in this thesis on the magnetodielectric material Mn3O4, the single crystal sample …
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5/2 state in high election density gallium arsenide/aluminum gallium arsenide quantum well
… is concerned with electronic transport in the higher Landau levels (LL) in a two-dimensional electron system, where novel many-body electronic phases have been observed. Particular attention is paid to the even-denominator fractional quantum Hall states at LL filling factors 5/2 and 7/2, and …
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Designing a modified Zeeman slower for the Paschen-Back magnetic regime
<p>Controlled study of high-density plasmas, such as those found in fusion reactions and stars, is difficult due to their highly-magnetized environments. A specialized high magnetic field (High-B) trap was developed at the University of Michigan in Georg Raithel's research group to study such …
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Small Gadolinium Oxide Contrast Agents: A Novel Class of Multi-Modality Contrast and Therapeutic Agents
… imaging is presented. MR relaxometry and nuclear magnetic relaxation dispersion (NMRD) characterization of the water-proton relaxation properties of small particulate gadolinium oxide and gadolinium oxide albumin microspheres is provided in chapter 3. In chapter 4 the structure and magnetic …
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Low-temperature magnetophotoluminescence characterization of high-purity gallium arsenide and indium phosphide
… is a very powerful technique to characterize high purity GaAs and InP grown by various epitaxial techniques. These III-V compound semiconductor materials are used in a wide variety of electronic, optoelectronic and microwave devices. The large binding energy differences of acceptors in GaAs …
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Optimization of Multidimensional Nuclear Magnetic Resonance Spectroscopy, for Resolution and Sensitivity, Through Application of Radial Sampling
The high probability of degenerate frequencies in NMR spectra of complex biopolymers such as proteins presented a great barrier to detailed analysis. The combination of multidimensional NMR spectroscopy and high magnetic field strengths has overcome the resulting resonance assignment problem for …
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Ultrahigh Field Magnetic Resonance Imaging – Technical Development and Translational Applications
<p>Magnetic resonance imaging (MRI) may be used to provide detailed images of the human body with excellent soft tissue contrast. Alongside its current widespread clinical applications for diagnosis and treatment, MRI allows researchers to measure structure and function of different tissue types in …
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