Crystallographic studies of the system YbAlxGa2−x (0 ⩽ x ⩽ 2)

The quasi-binary system SmGa2–SmAl2 at 600ºC

“…This way RGaAl phases with the hexagonal AlB 2 -type structure were found for R = Ce [15], Pr [16], Nd [8,9], Sm [17], Gd [17], Tb [17], Dy [18], Ho [19], and Er [8,9]. For the Yb-containing phase the structure type CaIn 2 was reported [10,14], whereas for the Euand Tm-containing phases the structure type KHg 2 was reported [10,13]. Crystallographic data for ternary phases reported in the quasi-binary systems RGa 2 -RAl 2 are listed in Table 1.…”

“…Isothermal sections of the phase diagrams of ternary systems R-Ga-Al (R -rare-earth metal) have been constructed for the following rare-earth metals: Y, La, and Ce at 400°C in the region 0-33.3 at.% R [1,2], La at 400°C over the whole concentration range [3,4], Gd at 800°C in the region 20-100 at.% Gd [5,6], Ho at 500°C and 800°C in the region 25-33.3 at.% Ho [3]. For R = Ce [7], Nd [8,9], Eu [10], Gd [11], Er [8,9], Tm [12,13], and Yb [10,14] the quasi-binary sections RGa 2 -RAl 2 have been investigated. In some systems, alloys of the equiatomic compositions RGaAl were synthesized and investigated by X-ray diffraction.…”

Crystal-field interactions in the pseudo-ternary compound ErAlxGa2-xstudied by inelastic neutron scattering

“…Upon partial substitution of the Al ions by Ga many of these pseudo-ternary compounds (e.g. R = Ce, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb) realize a hexagonal AlB 2 phase (space group P 6/mmm) and eventually another closely related structure for x 1 [4][5][6][7][8]. The magnetic structure of a few of these 1 To whom correspondence should be addressed.…”