Abstract
This paper deals with room temperature57Fe Mossbauer studies performed on crystalline Zr1−yFe y and Zr1−yFe y H x (0.05≤y≤0.5) alloys. For hydrogenated alloys, the transition from parato ferromagnetic behaviour is observed aty = 0.25, i.e. a considerably lower concentration of iron compared to uncharged alloys. It seems to be not only attributable to ZrFe2 formation. Apart from ZrFe2, a relatively intensive and quite different than the ZrFe2 contribution to theP(B) distribution has been observed for hydrogen charged alloys with only 25 at.% Fe. It is linked to the origin of the additional magnetic component due to hydrogen absorption in which Fe has less than 6 Fe nearest neighbours.
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