Structure and properties of EuTSb (T = Cu, Pd, Ag, Pt, Au) and YbIrSb
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Trinath Mishra
Abstract
The equiatomic antimonides EuTSb (T = Cu, Pd, Ag, Pt, Au) and YbIrSb were synthesized from the elements in sealed tantalum tubes in an induction furnace. The samples were investigated by powder X-ray diffraction and the structures were refined on the basis of single crystal X-ray diffractometer data: ZrBeSi type, P63/mmc, a = 450.7(5), c = 853.2(7) pm, wR2 = 0.032, 273 F2 values, 8 variables for EuCuSb, a = 474.9(1), c = 829.4(3) pm, wR2 = 0.028, 166 F2 values, 8 variables for EuAgSb, a = 467.1(2), c = 848.8(3) pm, wR2 = 0.042, 162 F2 valäues, 8 variables for EuAuSb, and TiNiSi type, space group Pnma, a = 762.5(3), b = 469.1(1), c = 792.1(1) pm, wR2 = 0.046, 670 F2 values, 20 variables for EuPdSb, and a = 700.7(1), b = 444.68(8), c = 781.3(1) pm, wR2 = 0.075, 592 F2 values, 20 variables for YbIrSb. The structures are ordered superstructure variants of the aristotype AlB2 with planar T3Sb3 hexagons in EuTSb (T = Cu, Ag, Au) and puckered T3Sb3 hexagons in EuTSb (T = Pd, Pt) and YbIrSb. TiNiSi type EuPtSb was characterized via powder data: a = 759.8(3), b = 465.4(3), c = 791.4(3) pm. Temperature dependent magnetic susceptibility measurements indicate antiferromagnetic ordering for all compounds. The samples were additionally characterized by 121Sb and 151Eu Mössbauer spectra.
© by Oldenbourg Wissenschaftsverlag, Münster, Germany
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Articles in the same Issue
- Hans Georg von Schnering Memorial
- Density functional analysis of the electronic structure of Cs9InO4:Evidence for the presence of a Cs– anion
- Zn13(CrxAl1−x)27 (x = 0.34–0.37): a new intermetallic phase containing icosahedra as building units
- Modeling martensic transformations in crystalline solids: validity and redesign of geometric approaches
- Isostructural phase transition in the spin crossover compound [Fe(dpp)2(NCS)2] · py
- Synthesis and crystal structure of Ba2In – how binary are binary phase diagrams?
- Structure and properties of EuTSb (T = Cu, Pd, Ag, Pt, Au) and YbIrSb
- Crystal formation from glass, crystal structure refinement and thermal behavior of K1−xRbxBSi2O6 boroleucite solid solutions from X-ray powder diffraction data
- (Bi9)4[Bi3Pb9Br47]: Probing the limits of the concept “crystal”
