Dynamics and charge transfer of hydrogen interstitials in ZrCrFe0.5Co0.5

摘要: Abstract Pressure–composition hydrogen absorption isotherms of ZrCrFe 0.5 Co have been obtained in the ranges 0.001 ⩽  P  ⩽ 30 bar and 30 ⩽  T  ⩽ 100 °C. The dynamics interstitials diffusion coefficients determined from kinetics studies. structural electrical properties, 57 Fe Mossbauer spectroscopy characterization hydrides studied at room temperature. growth β phase expense α plateau region, as shown powder X-ray diffractograms alloy hydrides, is used to explain resistivity results. variation with content supports random occupation atoms interstitial sites single phases (α β) cluster formation two-phase region (α + β). While spectrum parent shows a quadrupole doublet an isomer shift ( δ ) negative scale, value increases monotonically r up +0.20 mm s −1 for  = 2.83. small splitting indicative near-cubic symmetry, suggests iron metal high oxidation state. change upon uptake attributed volume effect also possible chemical link between atoms, through partial charge transfer atom interstitials.