Kristallstruktur von Gd3Ga2 und isotypen Verbindungen

Two-powder Nd2Fe14B magnets with DyGa-addition

“…[10][11][12][13][14] Nd 3 Ga 2 has not been found in magnets before, but has been identified by EPMA and electron diffraction and has the I4/mcm symmetry. 15 This result is in contrast with the results of Bernardi et al, 16 who found …”

Phase relations in the Nd–Ga–Si system at 870 K

“…The phase diagram of the Nd-Ga system was investigated by Kimmel et al [4] (0-33.3 at.% Nd) and by Manory et al [5] (33.3-100 at.% Nd). Including the Nd 3 Ga 2 [6] and Nd 9 Ga 4 [7] binary phases, which were found later, seven compounds exist in this system. Recently, Gur and Kimmel [8] investigated the pairwise substitution of Nd atoms by gallium in the Nd 1−x Ga 2+2x solid solution.…”

Bell‐Like [Ga5] Clusters in Eu3Li5+xGa5–x (x = 0.15)

“…The discrete [Ga n ] clusters, described up to now as being present in binary rare-earth and alkaline-earth gallides, normally do not contain a large number of atoms (n Յ 6, Figure 4) (space group C2/c, own crystal structure type), [25] Th 3 Ga 2 (space group P4/mbm, U 3 Si 2 type of crystal structure) [26] and Gd 3 Ga 2 (space group I4/mcm, own crystal structure type). [27] Surprisingly, the Ga-Ga distances vary greatly: 2.585 Å (Eu 3 Ga 2 ), 2.654 Å (Th 3 Ga 2 ) and 2.801 Å (Gd 3 Ga 2 ). However, the interaction between the gallium atoms within the [Ga 2 ] units can be very different as shown, for example, by the phases with a 5:3 stoichiometry.…”