Acoustic phonon anomaly at small wavevectors in Nb-H
- 14 June 1978
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 11 (11) , 2175-2181
- https://doi.org/10.1088/0022-3719/11/11/010
Abstract
The hydrogen-induced phonon-frequency shift in the system Nb-H0.15 has been investigated by high resolution triple-axis spectrometry. The transverse mode propagating in the ( zeta zeta 0) direction displays a dispersion step of 5.5% in the low-wavevector regime ( zeta -1 dependence of the step amplitude has not been found by ultrasonic and pendulum methods.Keywords
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