ChemInform Abstract: Chemistry and Physical Properties of the Phosphide Telluride Zr₂PTe₂.

Abstract

Zirconium I 4400Chemistry and Physical Properties of the Phosphide Telluride Zr2PTe2. -The title compound is synthesized by solid state reaction of the elements at 800°C (5 d), from mixtures of ZrP and ZrTe2 at 850°C (5 d), or by a thermite-type reaction of Zr and Te8O10(PO4)4. Single crystals are obtained by chemical vapor transport with iodine (800 → 900°C). Zr2PTe2 crystallizes in the rhombohedral space group R3m with Z = 3 (Bi2STe2-type structure). The compound is further characterized by LMTO band structure calculations, electrical resistivity, and magnetic susceptibility measurements. It shows metallic conductivity and temperature-independent Pauli paramagnetism. -(TSCHULIK, K.; RUCK, M.; BINNEWIES, M.; MILKE, E.; HOFFMANN, S.; SCHNELLE, W.; FOKWA, B. P. T.; GILLESSEN, M.; SCHMIDT*, P.; Eur.

Uncovering the behavior of Hf2Te2P and the candidate Dirac metal Zr2Te2P

“…The fit yielded lattice parameters a = 3.7946(2) Å and c = 29.140(1) Å, and displayed no traces of impurity phases. The lattice parameters are smaller than the Zr 2 Te 2 P parameters (a = 3.8119(3) Å and c = 29.189(3) Å) [23], indicative of the smaller ionic radius of Hf compared to Zr [32].…”

“…Single crystals of Zr 2 Te 2 P and Hf 2 Te 2 P were grown from elements as previously described for the Zr version [23]. Stoichiometric polycrystalline precursor material was first prepared by reacting the raw elements at 1000 °C for 24 h. The resulting powders (1.5 g and 1.3 g for Zr 2 Te 2 P and Hf 2 Te 2 P, respectively) were subsequently sealed under vacuum with 46 mg of iodine in quartz tubes with 14 mm diameter, 2 mm thickness, and 10 cm length.…”