In an effort to better understand the structural changes occurring during hydrogen loading of erbium target materials, we have performed in-situ D2 loading of erbium metal (powder) at temperature (450C) with simultaneous neutron diffraction analysis. This experiment tracked the conversion of Er metal to the  erbium deuteride (solid-solution) phase and then on to the  (fluorite) phase. Complet...

In an investigation of t he physical properties of hydr<;>gen isotopes it was n.ecessar.\:' t o prepare 10 liters of high-purity. hydro~en d~u.tende. TI1JS was don e ~y r eactmg IJ t hlUm aluminum hydride wit h deutenum oXIde, gly.;n~ hydro~en deutende, ]I) .t wo batch~s, ?f 98.1and 97.0-percent purity, respect ive!.\:' . .Ihls mater!ai was t hen frac t IOnated at JtqUJd hydrogen t emperature i...

The hydrogen absorption properties of CeMnGe, CeFeSi and CeCoX (X=Si and Ge) have been investigated. Neutron powder diffraction performed on deuteride CeCoGeD indicates that D-atoms are inserted in the pseudo-tetrahedral interstices [Ce4] of the tetragonal CeFeSi-type structure of this compound. Magnetization and electrical resistivity measurements reveal that the hydrogenation of: (i) CeCoSi a...

Figure 2. Raman spectra of Mg(BH(D)4)2 (in red) and LiBH(D)4 (in blue). Upper curves: deuteride, lower curves: hydride. The asterisk indicates a band resulting from residual diethyl-ether. Figure 5. Structure of Mg(BH4)2 viewed along the hexagonal b axis, showing two unit cells. Red (partially transparent) tetrahedra are BH4units; Mg atoms in blue. Considering the cations as A and the tetrahedr...

Ti–Cr–V alloys are known to absorb protium (hydrogen atom) up to H/M = 2, while Cr-rich alloys absorb up to H/M = 1 because of the formation of mono-protides (mono-hydrides). However, few hydrogen isotope effects of the Ti–Cr–V alloys have been reported. This paper aims to clarify the hydrogen isotope effects on the absorption properties of the Ti–Cr–V alloys in a composition range near the bou...