scholarly journals Magnetic Relaxation - Methods for Stabilization of Magnetization and Levitation Force

10.5772/16372 ◽  
2011 ◽  
Author(s):  
Boris Smolyak ◽  
Maksim Zakharov ◽  
German Ermakov
Keyword(s):  
Magnetic Relaxation ◽  
Levitation Force ◽  
Relaxation Methods

The Structure of Papaverine in Solution as Determined by 1H Nuclear Magnetic Relaxation Methods

1987 ◽  
Vol 40 (5) ◽  
pp. 915 ◽  
Author(s):  
ID Rae ◽  
ID Rae ◽  
PM Simmonds ◽  
PM Simmonds
Keyword(s):  
Magnetic Relaxation ◽  
Torsional Angle ◽  
Relaxation Methods ◽  
Conformational Energy Calculations ◽  
Related Alkaloid ◽  
Cdcl3 Solution ◽  
13C Relaxation ◽  
Noesy Spectra ◽  
Broad Energy ◽  
Good Agreement

Hydrogen relaxation in the papaverine molecule in CDCl3 solution has been studied so as to derive the conformation about the C1-CH2 bond. This was done for papaverine itself, in which the resonances of H5 and H8 were reassigned on the basis of NOESY spectra, and in the 7-OC2H3 analogue, the spectrum of which confirms the reassignment. The value for the torsional angle C 8a-C1-CH2-C lays between 70 and 92�, in good agreement with those found in crystals of papaverine , its hydrochloride, and the related alkaloid isosevanine (all in the range 68-94�). Conformational energy calculations show a broad energy minimum over the range 60-70�. The 6,7-methylenedioxy analogue of papaverine has essentially the same conformation but tumbles more rapidly in solution, the Tc value for it being 1.9×10-1ls whereas values for papaverine were 5.6×10-11 s (from 1H relaxation) and 3.1×1011 s (from 13C relaxation).

Correlating the axial Zero Field Splitting with the slow magnetic relaxation in GdIII SIMs

2021 ◽  
Author(s):  
Júlia Mayans ◽  
Albert Escuer
Keyword(s):  
Magnetic Relaxation ◽  
Zero Field ◽  
Zero Field Splitting ◽  
Field Splitting ◽  
Slow Magnetic Relaxation

A possible relation between the value of the axial Zero Field Splitting and the occurrence of field-induced slow magnetic relaxation has been established for a new gadolinium(iii) compound.

3He NUCLEAR MAGNETIC RELAXATION BEHAVIOURS IN HCP SOLID 3He WITH 4He IMPURITIES

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-115-C6-116 ◽  
Author(s):  
S. Maegawa ◽  
T. Mizusaki ◽  
Y. Hirayochi ◽  
T. Kusumoto ◽  
A. Hirai
Keyword(s):  
Magnetic Relaxation ◽  
Nuclear Magnetic Relaxation ◽  
Solid 3He ◽  
Nuclear Magnetic
Sign in / Sign up

Export Citation Format

Share Document