Journal ArticleDOI
Knight shift and electric quadrupole coupling in Mg metal
E M Dickson,E F W Seymour +1 more
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TLDR
In this article, the nuclear magnetic resonance of 25Mg was examined from 77 to 503 degrees K. The nuclear electric quadrupole coupling parameter has been determined at 295 degrees K from the field dependence of the second order splitting of the central magnetic transition and has the value e2qQ/h=281+or-4 kHz.Abstract:
The nuclear magnetic resonance of 25Mg has been examined from 77 to 503 degrees K. The Knight shift of 0.112+or-0.004% is in good agreement with earlier values and is temperature independent within experimental uncertainties, in strong contrast to the other divalent hexagonal close-packed metal Cd. The nuclear electric quadrupole coupling parameter has been determined at 295 degrees K from the field dependence of the second order splitting of the central magnetic transition and has the value e2qQ/h=281+or-4 kHz. The dipolar linewidth, assumed Gaussian, is about 2 sigma =180 Hz.read more
Citations
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The electric field gradient in noncubic metals
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Recent progress in solid-state NMR of low-γ nuclei
TL;DR: In this article, the authors examined the background to the difficulties of studying low-γ nuclei with small magnetic moments by solid-state NMR, and details such work as has been carried out on them.
Book ChapterDOI
Recent advances in solid-state 25mg NMR spectroscopy
Jair C. C. Freitas,Mark E. Smith +1 more
TL;DR: The most relevant advances in solid-state 25 Mg NMR spectroscopy are reviewed in this article, including a detailed account of the use of signalenhancement methods and of the more recent applications of first-principles calculations of 25 Mgs NMR parameters.
Book ChapterDOI
Recent Advances in Solid-State NMR of Alkaline Earth Elements
TL;DR: In this article, the authors discuss the development and implementation of signal enhancement techniques for quadrupolar nuclei, progress in methods for obtaining wideline and ultra-wideline NMR spectra of solids, together with the widespread use of computational techniques, have all contributed immensely to the accelerated growth of solid-state NMR of alkaline earth nuclei and their extension into biology and material science.
Journal ArticleDOI
Temperature dependence of the nuclear quadrupole coupling and relaxation time of 25Mg in Mg metal
TL;DR: In this paper, the temperature dependences of the quadrupole coupling (e2qQ/h) and relaxation time (T1) for 25Mg in metallic magnesium have been studied in the range 150 K to 400 K.
References
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Journal ArticleDOI
Nuclear Quadrupole Interaction in Pure Metals
T. P. Das,M. Pomerantz +1 more
TL;DR: In this article, the ionic part of the electric field gradient at the nuclei of certain metals are combined with available experimental data to obtain information about the electronic structures of the metals, or estimates of nuclear quadrupole moments.
Journal ArticleDOI
Nuclear Magnetic Resonance Line Shapes Resulting from the Combined Effects of Nuclear Quadrupole and Anisotropic Shift Interactions
TL;DR: In this article, the effects on the nuclear magnetic resonance line shape of a polycrystalline sample resulting from combined axially symmetric electric quadrupole and anisotropic shift interactions have been calculated through the second order.
Journal ArticleDOI
Nuclear quadrupole interactions in liquid and solid metals
TL;DR: In this paper, the nuclear quadrupole relaxation time in liquid metals is calculated, assuming free-ion cores interacting by an oscillatory screened potential, and whose positions in the liquid are described by the time-dependent pair distribution function of Oppenheim and Bloom.
Journal ArticleDOI
The Fermi Surface of Magnesium III: Local and Nonlocal Pseudopotential Band Structure Models for Magnesium
TL;DR: In this paper, the de Haas-van Alphen cross-sectional areas and magnetoacoustic calipers for the magnesium Fermi surface were used to generate local and non-local pseudopotential model Hamiltonians.
Journal ArticleDOI
Nuclear magnetic resonance in metals
TL;DR: A review of the experimental resuits and theory of nuclear magnetic resonance as they pertain to metals is given in this paper, where 217 references from which information was obtained, including features of experimental techniques; quantities measured in or derived from resonance experiments; mechanisms responsible for the position, width, shape, and intensity of observed nuclear resonance absorption lines; and where and when the nuclear magnetic Resonance method can be used.