Long‐time magnetic relaxation measurements on a quench melt growth YBCO superconductor

Abstract The nuclear magnetic relaxation times T1 and T2 may be determined by observing the relaxation that follows after a stop of an adiabatic fast passage at different points of the resonance signal. High resolution measurements are possible with external proton stabilization during the relaxation process if the chemical shifts are larger than 1 ppm and the relaxation times are longer than 1 sec. If no high resolution is required the lower limit is 0.2 seconds. Relaxation measurements are possible using conventional NMR-spectrometers without additional equipment. Since the signal to noise ratio is favourable, rather dilute solutions may be investigated. Relaxation measurements on benzene, on 4 different protons of 4-dimethylamino-benzaldehyde and on polyethylene oxide in solution are reported.

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Magnetic characterization of cobalt nanoparticles by temperature-dependent magnetic relaxation measurements

Applied Organometallic Chemistry ◽

10.1002/aoc.759 ◽

2004 ◽

Vol 18 (10) ◽

pp. 548-552 ◽

Cited By ~ 8

Author(s):

E. Romanus ◽

N. Matoussevitch ◽

S. Prass ◽

J. Heinrich ◽

R. Müller ◽

...

Keyword(s):

Magnetic Relaxation ◽

Cobalt Nanoparticles ◽

Temperature Dependent ◽

Magnetic Characterization ◽

Relaxation Measurements

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Nuclear magnetic relaxation measurements concerning the molecular mobility of methane in zeolite NaA

Zeolites ◽

10.1016/0144-2449(86)90004-7 ◽

1986 ◽

Vol 6 (1) ◽

pp. 12-13 ◽

Cited By ~ 11

Author(s):

D. Freude

Keyword(s):

Molecular Mobility ◽

Magnetic Relaxation ◽

Nuclear Magnetic Relaxation ◽

Relaxation Measurements ◽

Nuclear Magnetic

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Investigation of glass behaviour of vortex arrays in superconducting submicron YBCO powders by magnetic relaxation measurements

Physica C Superconductivity ◽

10.1016/s0921-4534(00)00235-5 ◽

2000 ◽

Vol 334 (1-2) ◽

pp. 115-122 ◽

Cited By ~ 1

Author(s):

E.V Blinov ◽

H Huhtinen ◽

E Lähderanta ◽

Yu Stepanov ◽

K Traito ◽

...

Keyword(s):

Magnetic Relaxation ◽

Relaxation Measurements

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Properties of the cupric sites in bovine superoxide dismutase studied by nuclear-magnetic-relaxation measurements

Biochemical Journal ◽

10.1042/bj1770303 ◽

1979 ◽

Vol 177 (1) ◽

pp. 303-309 ◽

Cited By ~ 32

Author(s):

N Boden ◽

M C Holmes ◽

P F Knowles

Keyword(s):

Superoxide Dismutase ◽

Water Molecule ◽

Magnetic Relaxation ◽

Nuclear Relaxation ◽

Histidine Residue ◽

Relaxation Rates ◽

Cyanide Concentration ◽

Relaxation Measurements ◽

Bovine Erythrocytes ◽

Frequency Temperature

Proton nuclear-relaxation rates have been measured as a function of frequency, temperature, pH and cyanide concentration in aqueous solutions of superoxide dismutase from bovine erythrocytes. The results show that, whereas for pH less than or equal to 9 only one water molecule is bound to each Cu2+ ion, at higher pH a second co-ordination site for OH- becomes available; it is proposed that this involves cleavage of the bond between Cu2+ and the histidine residue that bridges to Zn2+.

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