Local and long-range hydrogen diffusion in Nb(OH)0.011

Localized hydrogen motion in C15-type TaV2H0.65: temperature dependence of the H jump rate

“…Inspection of the experimental results for systems with the fast localized hydrogen motion suggests that the applicability of equation ( 1) is not restricted to hydrogen in Lavesphase TaV 2 -H (D). In particular, this equation appears to describe the behaviour of τ −1 l (T ) for the trapped hydrogen in Nb(OH) 0.011 [18] in the range 100-300 K and for 'mobile' H atoms in α-ScH 0.16 [19] in the range 125-300 K. The corresponding data and the fits based on equation (1) are shown in figure 5; the values of the fit parameters are T 0 = 131 K and τ −1 l0 = 2.9 × 10 10 s −1 for Nb(OH) 0.011 and T 0 = 146 K and τ −1 l0 = 1.0 × 10 10 s −1 for α-ScH 0.16 . It should be noted that the authors [18,19] have not analysed their data in terms of equation (1).…”

The possibility of enhancing light squeezing by cascade parametric oscillation

“…We have also found that the exponential function exp(T /T 0 ) with T 0 of the order of 100 K can describe the temperature dependences of the jump rates for the trapped hydrogen in Nb(OH) 0.011 [18] and for 'mobile' H atoms in α-ScH 0. 16 [19] in the range ∼100-300 K.…”

“…Inspection of the experimental results for systems with the fast localized hydrogen motion suggests that the applicability of equation (1) is not restricted to hydrogen in Lavesphase TaV 2 -H (D). In particular, this equation appears to describe the behaviour of τ −1 l (T ) for the trapped hydrogen in Nb(OH) 0.011 [18] in the range 100-300 K and for 'mobile' H atoms in α-ScH 0. 16 [19] in the range 125-300 K. The corresponding data and the fits based on equation (1) are shown in figure 5; the values of the fit parameters are T 0 = 131 K and τ −1 l0 = 2.9 × 10 10 s −1 for Nb(OH) 0.011 and T 0 = 146 K and τ −1 l0 = 1.0 × 10 10 s −1 for α-ScH 0.16 .…”

“…16 [19] in the range 125-300 K. The corresponding data and the fits based on equation (1) are shown in figure 5; the values of the fit parameters are T 0 = 131 K and τ −1 l0 = 2.9 × 10 10 s −1 for Nb(OH) 0.011 and T 0 = 146 K and τ −1 l0 = 1.0 × 10 10 s −1 for α-ScH 0.16 . It should be noted that the authors [18,19] have not analysed their data in terms of equation (1). As mentioned above, the temperature dependence of the type described by equation (1) has been predicted by the quantum diffusion theory [10,11].…”

“…Both terms in the exponent correspond to the increase in the Figure 5. The temperature dependences of the jump rates for the localized hydrogen motion in Nb(OH) 0.011 [18] and α-ScH 0.16 [19]. The full lines show the fits of equation (1) to the data.…”