Hydrogen vacancy

FIGURE 3 Formation energy as a function of Fermi level for Mg, nitrogen vacancies, interstitial H and hydrogen-vacancy complexes in GaN [1,14],... 

Since s does not remain constant with temperature, there are two unknown parameters in each equation. An IBM-7090 computer was used to obtain the best value of s and Evv (or Eu) at each temperature. Much better agreement was obtained with the assumption of hydrogen vacancies rather than metal interstitials for the case of uranium hydride. A comparison of the theoretically derived curves with the experimental points for uranium hydride is shown in Figure 3. For the case of palladium hydride, equally good agreement was obtained with both assumptions. However, on the basis of x-ray data, it was decided that the nonstoichiometry was due to hydrogen vacancies. The calculated... 

The formation of hydrogen vacancies, DH, in a metal hydride can be represented by the reaction ... 

Tateyama Y, Ohno T. Stability and clusterization of hydrogen-vacancy complexes in Fe An ab initio study. Phys. Rev. B 2003 67 174105. 

Hydrogen Vacancies in Pure and Doped MgHj Application of the Grand-... 

Grau-Crespo, R., et al. 2009. Thermodynamics of hydrogen vacancies in MgH2 from first-principles calculations and grand-canonical statistical mechanics. Phys. Rev. B 80 174117. 

Green s function Gq matrix, we can go to the next step (step 1 in the schematic representation of Fig.1) to calculate Itteratively the CPA condition. This condition for a-SiH (and similarly for a-GeH) and, for simplicity, only 1H and 4H hydrogenated vacancies, is ... 

Fig. 168 shows the temperature dependence of the resistivity of GdH3 thin films with low (a) and high (b) hydrogen vacancies in a magnetic field of 120 kOe and in zero field. The zero field semiconductor-like behavior in the resistivity was found to be suppressed in a magnetic field of 120 KOe. 

W. Ulrici, F.-M. Kiesling, P. Rudolph, 2004, The nitrogen-hydrogen-vacancy complex in GaAs , phys. stat. sol. (h) 241, 1281 1285. 

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