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Showing 1 to 9 of 9 for “"bulk magnetic susceptibility"”.
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Ionic model for chromium, manganese and iron impurities in copper
… lead us to conclude that an ionic model of the magnetic impurity is necessary to explain the data. We develop a model which assumes a definite 3dn configuration with a definite L-S ground state and includes intraconfigurationa1 energy level splittings due to a crystalline electric field and …
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Nuclear magnetic resonance studies of structure and dynamics in heterogeneous samples
… described in terms of variations in the local susceptibility. The proposed methods are based on analyzing the modulation of spin dynamics by the Magic Angle Sample Spinning (MASS) method in the presence of both local variations in the bulk magnetic susceptibility and molecular diffusion. The …
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Rare earth impurities in metals: The transition from virtual to bound f levels
Measurements of the solvent Knight shift and bulk magnetic susceptibility have been carried out in dilute alloys of the rare earth metals in liquid Cu. Other measurements of the Al and Cu Knight shift in dilute alloys of Gd in Al-Cu and Al-Ag binary alloys have also been made. The susceptibility …
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Petrofabric investigation of the sulfide-rich basal zone of the Duluth Complex
… using a combination of techniques. Anisotropy of magnetic susceptibility (AMS) analysis identifies a well-developed, magnetite/titanomagnetite-dominated, pseudo-single-domain (grain size ~0.1–10 µm), oblate magnetic fabric in the mineralized zone, which is weaker in unmineralized rocks. Fabric …
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Magnetic Resonance Studies of a Sodium-Ion Battery Cathode: Experiment and Theory
… techniques which probe both the local and bulk structure are employed, in conjunction with first-principles calculations. The superstructure of Na₀.₆₇[Mg₀.₂₈Mn₀.₇₂]O₂ is elucidated for the first time using synchrotron X-ray diffraction (XRD), total neutron scattering and high-frequency …
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Dynamic Magnetic Resonance Imaging for Tumor Prognosis
… Because deoxyhemoglobin (dHbO2) is paramagnetic and oxyhemoglobin (HbO2) is non-magnetic, the change of concentration of deoxyhemoglobin and oxyhemoglobin can cause a Bulk Magnetic Susceptibility (BMS) change and the T2* signal response during MR imaging. Here, I applied this technique …
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Solid state NMR studies of oxide superconductors and related materials
Solid state nuclear magnetic resonance spectroscopy is used to obtain information on the nearest neighbor atom scale regarding various structural, electronic and magnetic properties of a variety of simple oxides, mixed metal oxides and oxide superconductors. Chapter 1 briefly reviews the basic …
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On Nature of the Gradient Echo MR Signal and Its Application to Monitoring Multiple Sclerosis
… are much needed.</p><p>As a non-invasive tool, Magnetic resonance imaging: MRI) plays a key role in MS diagnosis. Numerous MRI techniques have been proposed over the years. Among most widely used are conventional T1-weighted: T1W), T2-weighted: T2W) and FLuid Attenuated Inversion Recovery: …
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Development of first principles paramagnetic NMR methodologies to probe the complex local structural properties of Li-ion battery materials
NMR spectroscopy of paramagnetic solids provides detailed information about the local configuration and the chemical environment of the NMR observed center, as well as about the structural, magnetic and electronic properties of the coordianted paramagnetic centres. In the case of complex …