Composition dependence of low-frequency excitations in lithium silicophosphate glasses by nuclear magnetic resonance and electrical conductivity

1997 ◽  
Vol 55 (22) ◽  
pp. 14836-14846 ◽  
Author(s):  
J. Dieckhöfer ◽  
O. Kanert ◽  
R. Küchler ◽  
A. Volmari ◽  
H. Jain
Keyword(s):  
Electrical Conductivity ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Composition Dependence ◽  
Low Frequency ◽  
Silicophosphate Glasses ◽  
Nuclear Magnetic

Nuclear Magnetic Resonance Studies of δ-Stabilized Plutonium

2003 ◽  
Vol 802 ◽  
Author(s):  
N. J. Curro ◽  
L. Morales
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Low Frequency ◽  
Lattice Relaxation ◽  
Spin Fluctuations ◽  
Spin Lattice Relaxation ◽  
Cubic Symmetry ◽  
Magnetic Resonance Studies ◽  
Local Distortions ◽  
Nuclear Magnetic

Nuclear Magnetic Resonance studies of Ga stabilized δ-Pu reveal detailed information about the local distortions surrounding the Ga impurities as well as provides information about the local spin fluctuations experienced by the Ga nuclei. The Ga NMR spectrum is inhomogeneously broadened by a distribution of local electric field gradients (EFGs), which indicates that the Ga experiences local distortions from cubic symmetry. The Knight shift and spin lattice relaxation rate indicate that the Ga is dominantly coupled to the Fermi surface via core polarization, and is inconsistent with magnetic order or low frequency spin correlations.

A 31P and 199Hg nuclear magnetic resonance and vibrational spectroscopic study of phosphine complexes of Hg(ClO4)2

1984 ◽  
Vol 62 (3) ◽  
pp. 621-627 ◽  
Author(s):  
Tim Allman ◽  
Ram G. Goel
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Solid State ◽  
Magnetic Resonance ◽  
Spectroscopic Study ◽  
Vibrational Spectroscopy ◽  
Low Frequency ◽  
Sample Concentration ◽  
Phosphine Complexes ◽  
Nuclear Magnetic

Cationic complexes of the type [Hg(phosphine)n](ClO4)2 (n = 2, 3, 4) (phosphine = P(t-Bu)3, PCy3, P(4-Me2NC6H4)3, P(4-MeOC6H4)3, P(4-MeC6H4)3, P(3-MeC6H4)3, P(2-MeC6H4)3, P(4-FC6H4)3, P(4-ClC6H4)3) have been prepared and studied by vibrational spectroscopy in the perchlorate and low frequency regions, as well as by 31P and 199Hg nmr. The skeletal Hg—P frequencies have been assigned in both solution and the solid state. It was found that 1J(Hg—P) decreases with increasing phosphine basicity and that it is also dependent upon sample concentration and temperature.

scholarly journals Observation of high and low frequency muscle fatigue by means of 31P nuclear magnetic resonance.

1986 ◽  
Vol 5 (2) ◽  
pp. 89-96 ◽  
Author(s):  
Masuo MURO ◽  
Akira NAGATA ◽  
Chiseko SAKUMA ◽  
Toshio MORITANI ◽  
MaSae YONA ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Muscle Fatigue ◽  
Low Frequency ◽  
31P Nuclear Magnetic Resonance ◽  
Nuclear Magnetic

Reactions of Sodium N,N-Diethyldithiocarbamate with the Chlorides and Bromides of Niobium(V), Tantalum(V), and Protactinium(V)

1971 ◽  
Vol 49 (8) ◽  
pp. 1151-1160 ◽  
Author(s):  
P. R. Heckley ◽  
D. G. Holah ◽  
D. Brown
Keyword(s):  
Electrical Conductivity ◽  
Molecular Weight ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Organic Solvents ◽  
Conductivity Measurements ◽  
Nuclear Magnetic

Reactions between niobium(V), tantalum(V), and protactinium(V) chlorides and bromides and sodium N,N-diethyldithiocarbamate (Nadtc) have been examined in non-aqueous, non-oxygenated organic solvents. Complexes obtained are of the types Mdtc4X, Mdtc3X2, Mdtc3S, Mdtc2X3, and Mdtc2X3.nC6H6 (n = 0.7–1.0); not all complexes have been isolated for each metal. Within each group the niobium(V) and tantalum(V) complexes are isostructural; possible structures are discussed in the light of results from infrared (i.r.) and nuclear magnetic resonance (n.m.r.) spectra, molecular weight, and electrical conductivity measurements.

scholarly journals Methyl andt-butyl group reorientation in planar aromatic solids: Low-frequency nuclear magnetic resonance relaxometry and x-ray diffraction

2003 ◽  
Vol 118 (24) ◽  
pp. 11129-11138 ◽  
Author(s):  
Peter A. Beckmann ◽  
Carolyn A. Buser ◽  
Kathleen Gullifer ◽  
Frank B. Mallory ◽  
Clelia W. Mallory ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Low Frequency ◽  
X Ray Diffraction ◽  
X Ray ◽  
Butyl Group ◽  
Nuclear Magnetic Resonance Relaxometry ◽  
Nuclear Magnetic
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