Structural Chemistry of the Neptunium–Germanium Binary System

Vacancy-ordering effects in AlB2-type ErGe2 − x (0.4 < x ≤ 0.5)

“…Many derivative structures can also be found (Hoffmann & Pö ttgen, 2001). The structural study of compounds with a nominal composition of the form AB 2 , A = rare-earth metal and B = Si or Ge, dates back more than 50 years (Zachariasen, 1949;Perri et al, 1959;Mayer et al, 1962;Tharp, 1962), but in the last decade special interest has been directed towards these types of systems owing to their magnetic and electronic properties, and a great amount of work has been involved in these studies (Netzer, 1995;Ijjaali et al, 1999;Venturini et al, 1999a;Boulet et al, 2001;Palenzona et al, 2003;Boulet et al 2003). The structures tend to be very complicated, but in special cases a good description can be achieved using a normal three-dimensional approach (Smith et al, 1965;Pö ttgen et al, 1998;Venturini et al, 1999b).…”

The binary system Pu–Si: crystallochemistry and magnetic properties

“…A systematic re-investigation of the phase relations in the actinide binary systems was undertaken. Works on uranium [1][2][3] and neptunium [4,5] systems have reported that few systems have been extensively studied and even the uranium binary systems are not fully known. For the transuranium systems almost nothing is known, although, due to its general interest in nuclear technology, the plutonium binary system was found to be better described in the literature than the corresponding uranium or neptunium systems.…”