Observation of a deuteron nuclear magnetic resonance Knight shift in conductive polyaniline

2005 ◽  
Vol 122 (5) ◽  
pp. 054901 ◽  
Author(s):  
Yanina A. Goddard ◽  
Robert L. Vold ◽  
Jennifer Cross ◽  
Matthew P. Espe ◽  
Gina L. Hoatson
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Knight Shift ◽  
Conductive Polyaniline ◽  
Nuclear Magnetic

Nuclear Magnetic Resonance Studies of Liquid Semiconducting Sb-Te Alloys

1984 ◽  
Vol 39 (2) ◽  
pp. 148-151 ◽  
Author(s):  
V. Hinkel ◽  
D. Ploumbidis
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Knight Shift ◽  
Elevated Temperatures ◽  
Strong Dependence ◽  
Alloy System ◽  
Entire Concentration Range ◽  
Magnetic Resonance Studies ◽  
Knight Shifts ◽  
Nuclear Magnetic

Nuclear magnetic resonance studies of 123Sb and 121Sb in the SbxTe1-x liquid alloy system are described. Interest is focussed on the concentration dependence of the Knight shift and the NMR linewidth. Measurements of the Knight shift and linewidth have been carried out over the entire concentration range at elevated temperatures (900-1100) K. Knight shifts of 123Sb and 121Sb, measured to high precision, show hyperfine structure anomaly. Both. Knight shift and linewidth show strong dependence on the alloy concentration and extreme behavior at the concentrations 40 at.% Sb and 50 at.% Sb. respectively. The experimental results are discussed in terms of modes concerning the electronic structure of liquid semiconductors.

Nuclear Magnetic Resonance of Amorphous Alloys CuxZr100-x(40≦x≦60)

1982 ◽  
Vol 37 (9) ◽  
pp. 1030-1034 ◽  
Author(s):  
J. Abart ◽  
W. Socher ◽  
J. Voitländer
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Amorphous Alloys ◽  
Knight Shift ◽  
Short Range ◽  
Short Range Order ◽  
Range Order ◽  
Lattice Symmetry ◽  
Local Lattice ◽  
Nuclear Magnetic

Abstract91Zr-and 63Cu-NMR measurements of the amorphous alloys CuxZr100-x(40≦x≦60) are reported. By comparison of the experimental quadrupole disturbed spectra with simulated spectra of the amorphous alloys a short range order can be deduced, which is similar to the local lattice symmetry of the corresponding crystalline compounds. Furthermore the Knight shift of both nuclei in the alloys could be determined.

NUCLEAR MAGNETIC RESONANCE IN METAL SINGLE CRYSTALS: I. TIN AND ALUMINUM

1964 ◽  
Vol 42 (8) ◽  
pp. 1499-1507 ◽  
Author(s):  
E. P. Jones ◽  
D. Llewelyn Williams
Keyword(s):  
Magnetic Field ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Single Crystals ◽  
Knight Shift ◽  
Exchange Interactions ◽  
Indirect Exchange ◽  
Metal Single Crystals ◽  
First Time ◽  
Nuclear Magnetic

Nuclear magnetic resonance studies in single-crystal tin specimens have been done at liquid helium temperatures. The Knight shift has been studied as a function of crystal orientation in a constant magnetic field for different values of field and temperature. The anisotropy of the Knight shift has been observed directly for the first time. The linewidth of the resonance has also been studied and the results indicate a contribution to this from indirect exchange interactions. An attempt has been made to observe oscillations in the Knight shift as a function of magnetic field in both tin and aluminum single crystals. None have been detected but an upper limit to the effect has been set and this is compared with theoretical estimates.

Nuclear Magnetic Resonance of 51V inV3 Si and VSi2 at High Temperatures

1981 ◽  
Vol 36 (12) ◽  
pp. 1305-1308 ◽  
Author(s):  
D. Ploumbidis ◽  
R. Rünger ◽  
R. Bucklisch
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
High Temperatures ◽  
Knight Shift ◽  
Temperature Range ◽  
Increasing Temperature ◽  
Nuclear Magnetic

AbstractThe Knight shift of the 51V resonance has been measured as a function of temperature in poly-crystalline V3Si and VSi2 samples. For the VaSi system the measurements have been extended to the temperature range from 400 K up to 1250 K, whereas for VSi2 the first NMR measurements at all have been carried out, covering the range 300 to 1250 K. The observed 51V Knight shift in VSi2 is negative (K51V (T=272 K) = -0.15%) and tends to zero with increasing temperature.

Nuclear magnetic resonance in Al-rich quasiperiodic crystals

1986 ◽  
Vol 1 (2) ◽  
pp. 243-246 ◽  
Author(s):  
M. Rubinstein ◽  
G.H. Stauss ◽  
T.E. Phillips ◽  
K. Moorjani ◽  
L.H. Bennett
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Properties ◽  
Magnetic Resonance ◽  
Knight Shift ◽  
Powder Pattern ◽  
Electronic And Magnetic Properties ◽  
Nuclear Magnetic

The 27Al and the 55Mn nuclear magnetic resonance powder pattern lineshapes have been obtained in icosahedral and decagonal (T phase) Al-Mn quasiperiodic crystals, and are compared to that of orthorhombic Al6Mn. The quasiperiodic crystals yield much broader spectra with little resolved structure. The quadrupole and Knight shift parameters for the 55Mn resonance in orthorhombic Al6Mn have been determined as |vQ| = 0.76 MHz,Kax = −2.7 × 10−4, Kiso = + 5 × 10−3. The results imply that Al6Mn and the quasiperiodic crystals have similar electronic and magnetic properties.

Optically detected nuclear magnetic resonance and Knight shift in AlxGa1−xAs/GaAs heterostructures

1991 ◽  
Vol 78 (5) ◽  
pp. 459-464 ◽  
Author(s):  
M. Krapf ◽  
G. Denninger ◽  
H. Pascher ◽  
G. Weimann ◽  
W. Schlapp
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Knight Shift ◽  
Optically Detected ◽  
Nuclear Magnetic
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