Structural transitions related to order-disorder and thermal desorption of D atoms in TbFe${}_2$D${}_{4.2}$

V. Paul-Boncour, O. Isnard

TbFe${}_2$D${}_{4.2}$ deuteride crystallizes in a monoclinic structure ($Pc$ space group) with deuterium inserted into 13 [Tb${}_2$Fe${}_2$] and 5 [TbFe${}_3$] tetrahedral interstiti…