New rare earth metal-rich indides RE14Ni3In3 (RE=Sc, Y, Gd–Tm, Lu)—synthesis and crystal chemistry

Rare earth metal-rich indides RE14Rh3−xIn3 (RE=Y, Dy, Ho, Er, Tm, Lu)

“…The small deviations from a smooth curve are indicative for small homogeneity ranges, although only Rh1 defects were evident from the single-crystal data. Similar behavior has been observed in the RE 14 Co 3 In 3 [2,3,12] and RE 14 Ni 3 In 3 [13] series. Such small deviations in the cell volumes are frequently observed for compounds with homogeneity ranges.…”

“…Final difference Fourier syntheses revealed no significant residual peaks. The refinements then converged to the residuals listed in Tables 2 and 3 [2,3,12] and RE 14 Ni 3 In 3 [13] series, also the RE 14 Rh 3 In 3 indides form only with the smaller RE elements. The cell volumes decrease from the dysprosium to the lutetium compound as expected from the lanthanoid contraction.…”

“…The atomic parameters of Y 14 Co 3 In 3 [3] were taken as starting values and the structures were refined with anisotropic displacement parameters for all atoms with SHELXL-97 (full-matrix least-squares on F o 2 ) [11]. Since the RE 14 Co 3 In 3 [2,3,12] and RE 14 Ni 3 In 3 [13] series revealed RE/In and T/In mixing on two 4c sites and cobalt defects on the 8g sites, the occupancy parameters have been refined in separate series of least-squares cycles. For the RE 14 Rh 3 In 3 series (except Y 14 Rh 3 In 3 ), we found only defects for the 8g Rh1 sites.…”

“…In Ho 14 Co 2.80 In 2.89 [3], the In2-In2 distance of 300 pm is even shorter and we can safely assume strong In2-In2 bonding in these complex structures. For further details of the family of RE 14 T 3 In 3 indides we refer to our detailed crystal chemical description of the series RE 14 Co 3 In 3 [2,3] and RE 14 Ni 3 In 3 [13]. Finally we draw back to the occupancy parameters of the Rh1 site (Table 4).…”

Growth, Crystal Structure and Magnetic Characterization of Zn-Stabilized CePtIn4

“…Crystals with a fresh surface exposed, analyzed using energy dispersive X-ray spectroscopy (EDS), showed that the elemental composition of the new Zn-stabilized CePtIn4 phase is CePt(In0.9Zn0.1)4. These data were used as a starting point for the Rietveld refinement, where four different models were tested for the distribution of the Zn: (1) randomly distributing the Zn over the three independent In sites in the structure, In1, In2, and In3, (2) putting all the Zn on the In1 site, (3) putting all Zn on the In2 site, and (4) putting all the Zn on the In3 site. The model that gave the best fit to the diffraction data was when all the Zn was on the In1 site.…”