I. Jacob et al., INVESTIGATION OF THE FE BINDING-PROPERTIES IN ZR(ALXFE1-X)2 BY NUCLEAR RESONANT PHOTON SCATTERING, Zeitschrift für physikalische Chemie, 181, 1993, pp. 55-60
Citations number
14
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical
A study of the iron binding properties in the Zr(AlxFe1-x)2 system, x
= 0, 0.083, 0.2, is made by utilizing the nuclear resonant photon scat
tering (NRPS) of 8.512 MeV gamma rays from Fe-56. Large samples of Zr(
AlxFe1-x)2 compounds, about 200 g each, were introduced into the photo
n beam emitted by a Cr(n,gamma) source. The scattered 8.512 MeV gamma
radiation was detected by a large, 130 cm3 HPGe detector. An experimen
tal set-up was designed to enable a direct comparison of the scattered
intensities, thus obviating complicated self-absorption and geometric
al corrections. A substitution of small amounts of Fe in ZrFe2 by Al,
x = 0.083, 0.2 was found to cause a reduction of the resonantly scatte
red intensity. This result indicates a softening of the Fe bonding str
ength in the corresponding compounds. Since such a substitution is als
o known to cause a large increase in the hydrogen absorption capacity,
our results seem to conform with a prediction of the rule of reverse
capacity.