Crystal chemistry and magnetism of neodymium stannides including compounds of the structural series REnSn3n−2

Structural chemistry and magnetic properties of RE2[SnxGe1−x]5 (RE=Nd, Sm) and RE[SnxGe1−x]2 (RE=Gd, Tb): Four new rare-earth metal intermetallic compounds with germanium zig-zag chains and tin square-nets

“…They are also consistent with distances found in the square nets in RESn 1+x Ge 1−x [1]. For comparison, Sn-Sn distances in the Sn sheets reported for the series of binary RE n Sn 3n−2 compounds measure from 3.18 to 3.26 Å [23]. The interlayer distances in the double square nets in I measure 2.69(1) Å.…”

“…We also recall that the previously stated observation that RE-Ge-Sn reactions for the early lanthanides (La, Ce, Pr) result in the cubic RESn 3 phases and no Ge-Sn mixing [1]. These also are the very same rare-earth metals, for which the RE n Sn 3n−2 (where n = 1-4) homologue series is known [23]. However, as one moves to the right of the 4f-block, due to the lanthanide contraction, the ionic sizes decrease and new pseudo-binary compounds with mixed Ge and Sn begin to appear [1].…”

“…For instance, we can hypothesize that a possible new member of the series will be RE 3 Ge 7 , the structure of which is an intergrowth of REGe 2 and RE 2 Ge 5 . This particular structure is yet unknown for the RE-Ge systems; however, several RE 3 Sn 7 , the second to last members of the RE n Sn 3n−2 (where n = 1-4) homologue series are already reported [23]. Although their structures are different than the ones discussed herein, a similar "building-up" approach by starting from RESn 3 (AuCu 3 type) relates the structures of all members of the family [23,33].…”

The isothermal section of the Ag–La–Sn ternary system at 400°C

“…This result is consistent with the assessment of Palenzona and Cirafici [7], which was mainly based on the experimental data from Borzone et al [8] and Eremenko et al [9]. However, both works from Borzone et al [8] and Weitzer et al [10] showed that there were other intermetallics in this system. For example, Borzone et al [8] confirmed the existence of La 3 Sn phase, which was also observed by Zhuang et al [11] in the La-Ni-Sn system and Zhan et al [12,13] in the La-Ti-Sn and La-Cu-Sn systems.…”

Phase equilibria in Nd–Ni–Sn ternary system

“…[7,8]. In this system nine binary compounds are formed: NdSn 3 (Cu 3 Au strucrure type (ST)), Nd 2 Sn 5 (Ce 2 Sn 5 ST), Nd 3 Sn 7 (Ce 3 Sn 7 ST), NdSn 2 (own ST), Nd 3 Sn 5 (unknown structure), NdSn (unknown structure), Nd 11 Sn 10 (Ge 10 Ho 11 ST), Nd 5 Sn 4 (Sm 5 Ge 4 ST), Nd 5 Sn 3 (Mn 5 Si 3 ST).…”