Journal ArticleDOI
Effects of hydrogen transitions in niobium at very low temperature
G. Cannelli,R. Cantelli +1 more
TLDR
In this paper, the presence of hydrogen in Nb containing O and N interstitial impurities gives rise to a relaxation process at liquid helium temperature, studied by exciting two vibration modes of the specimen (20 and 75 kHz).About:
This article is published in Solid State Communications.The article was published on 1982-08-01. It has received 18 citations till now. The article focuses on the topics: Liquid helium & Debye.read more
Citations
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Journal ArticleDOI
Acoustic properties of amorphous SiO2 and PdSiCu, and of crystalline Ag, NbTi and Ta at very low temperatures
TL;DR: In this paper, the acoustic properties of polycrystalline superconducting NbTi and Ta were investigated at frequencies of 100 Hz and 6 kHz and at temperatures of 0.1 mK.
Book ChapterDOI
Diffusion of Hydrogen in Metals
TL;DR: Many experimental methods have been applied to determine diffusion coefficients of H in metals as mentioned in this paper, including permeation methods, mechanical relaxation methods, electrochemical methods, magnetic disaccommodation, resistivity relaxation, tracer method, x-ray method, gravimetric method, nuclear magnetic resonance (NMR), quasielastic neutron scatterin (QNS)2, Mbssbauer effect3, nuclear acoustic resonance4 and a nuclear physical method5.
Journal ArticleDOI
The roots and the future of mechanical spectroscopy
TL;DR: The first school on the anelastic behaviour of solids was founded by Clarence Zener in 1945 in Chicago, at which he was able to attract outstanding young researchers, who subsequently disseminated our culture all over the world as mentioned in this paper.
Journal ArticleDOI
Acoustic quality factor of molybdenum and tungsten at low temperatures
TL;DR: In this article, the amplitude-independent acoustical mechanical quality factors of 1 kHz torsional modes of resonators designed to minimize extraneous loss effects were measured as a function of temperature and heat treatment from 50 mK to 300 K.
Journal ArticleDOI
Low temperature hydrogen tunnelling in NbOxHy (x ≈ 0.002; y ≈ 0.002)☆
TL;DR: In this article, low temperature specific heat and neutron spectroscopy measurements were used to investigate hydrogen tunnelling in NbOxHy (x ≈ 0.002; y ≈0.002), and the results obtained independently from the two experimental techniques were in excellent agreement.
References
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Journal ArticleDOI
The diffusion coefficients of hydrogen and deuterium in vanadium, niobium, and tantalum by gorsky-effect measurements
G. Schaumann,J. Völki,G. Alefeld +2 more
TL;DR: Gorsky effect measurements on vanadium, niobium, and tantalum-samples loaded with different concentrations (0.2 to 4.3 at%) of hydrogen or deuterium are reported.
Journal ArticleDOI
Quantum Theory of Diffusion with Application to Light Interstitials in Metals
C. P. Flynn,A. M. Stoneham +1 more
TL;DR: In this paper, Flynn and Stoneham used the potential associated with the pth interstice (the division of K into terms associated with different interstices) for light interstitials in metals.
Journal ArticleDOI
The trapping of hydrogen in niobium by nitrogen interstitials
G Pfeiffer,H Wipf +1 more
TL;DR: In this article, the authors investigated the trapping of hydrogen in niobium by nitrogen interstitials by resistance measurements and found that only about one hydrogen atom can be trapped per interstitial at low temperatures and that the trapping enthalpy is 0.12+or-0.02 eV.
Journal ArticleDOI
Anelastic studies of hydrogen diffusion in niobium
C.C. Baker,H.K. Birnbaum +1 more
TL;DR: In this paper, the diffusional behavior of hydrogen in niobium was investigated in the temperature range 300°-20°K using internal friction techniques, and the frequency dependence, orientation dependence, and concentration dependence of the hydrogen relaxations were studied in high purity Nb and Nb-O(N) alloys.
Related Papers (5)
Anomalous heat capacities of niobium and tantalum below 1 K
Nitrogen-Hydrogen Interstitial Pair in Niobium as a New System Showing Atomic Tunneling
C. Morkel,H. Wipf,K. Neumaier +2 more