Formation of the Sub-oxide ScAuO and the Drastically Negative Al NMR Shift in ScAl.

During attempts to synthesize ScAuAl in the cubic GdRhIn-type structure, the solid solution ScAuAl in the PbCl-type structure formed instead. Subsequently, the solid solution ScAuAl was investigated with respect to its existence range along with the structure types formed for different compositions with = 0, 0.25, 0.

Physical and Magnetocaloric Properties of TbPdAl and the Ferromagnetic Solid Solution TbLuPdAl ( = 0.1-0.9).

TbPdAl and the solid solution TbLuPdAl ( = 0.1-1) have been synthesized via arc-melting techniques using the elements as starting materials and crystallize in the orthorhombic MgCuAl-type structure (). As expected, the unit cell volumes decrease due to the lanthanide contraction from the Tb to Lu compounds, thus showing Vegard behavior because of the differences of the ionic radii of the trivalent rare-earth cations.

Intermetallic RETAl Phases (RE = Sc, Y, Ce-Nd, Sm, Gd-Lu; T = Ru, Ir): Diversity in their Magnetic, Magnetocaloric, and Critical Properties.

Over 20 new compounds of the RETAl series (RE = Sc, Y, Ce-Nd, Sm, Gd-Lu; T = Ru, Ir; YbIrGa type structure; superstructure of MgZn; fully ordered NbIrAl type) have been synthesized. They crystallize in the hexagonal crystal system with space group 6/. Their lattice parameters are in the ranges of = 935-963 and = 851-874 pm for the RERuAl and = 913-966 and = 825-865 pm for the REIrAl series.

Correlations of Crystal and Electronic Structure via NMR and X-ray Photoelectron Spectroscopies in the RETMAl (RE = Sc, Y, La-Nd, Sm, Gd-Tm, Lu; TM = Ni, Pd, Pt) Series.

A total of 35 intermetallic aluminum compounds have been synthesized from the elements via arc melting and characterized by powder X-ray diffraction. A total of 15 of them have been previously reported; however, detailed property investigations were missing. Compounds of the RETMAl (rare earth metal RE = Sc, Y, La-Nd, Sm, Gd-Tm, Lu) series with transition metal TM = Ni, Pd, and Pt crystallize isostructurally in the orthorhombic MgCuAl type structure ( Cmcm, oC16, fc).

Abrupt Europium Valence Change in EuPtAl around 45 K.

EuPtAl has been prepared from the elements via arc-melting and subsequent temperature treatment; the structure was refined from single crystal X-ray diffraction data. The compound crystallizes in an orthorhombic (3 + 1)D commensurately modulated structure (ScPtAl type) with space group Cmcm(α,0,0)0 s0 (α = 2/3). Full ordering of the Pt and Al atoms within the [PtAl] polyanion was observed.