Nuclear magnetic relaxation and diffusion of hydrogen in an amorphous Ni-Ti alloy

Content Provider	Scilit
Author	Crouch, M. A. Havill, R. L. Titman, J. M.
Copyright Year	1986
Description	Journal: Journal of Physics F: Metal Physics The nuclear magnetic relaxation rate of$ ^{1}$H in $a-Ni_{35}Ti_{65}$ has been measured. The rate may be accounted for by the nuclear dipole-dipole interaction of the diffusing spins together with a second relaxation path through the hyperfine coupling to the electron bands. It is found that the dipolar part of the relaxation may be interpreted by Torrey's model from which an activation energy of the diffusion equal to 0.26 eV may be deduced. Since the view has often been expressed that a distribution of activation energies in amorphous materials will lead to departures from this model, the relaxation rate has also been calculated from a computer simulation of diffusion on a random array. Deviations from the model were discovered but they were not large enough to warrant re-interpretation of the present experiment.
Related Links	http://iopscience.iop.org/article/10.1088/0305-4608/16/1/017/pdf
ISSN	03054608
DOI	10.1088/0305-4608/16/1/017
Journal	Journal of Physics F: Metal Physics
Issue Number	1
Volume Number	16
Language	English
Publisher	IOP Publishing
Publisher Date	1986-01-01
Access Restriction	Open
Subject Keyword	Journal: Journal of Physics F: Metal Physics Atomic, Molecular and Chemical Physics Amorphous Ni Computer Simulation Nuclear Magnetic Relaxation Relaxation Rate
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys 3100/3101 Engineering