High Pressure Synthesis and Structure Refinement of Yttrium-Zinc Intermetallic Compound Y₂Zn₁₇

Abstract

Single crystal of yttrium-zinc intermetallic compound Y₂Zn₁₇ have been synthesized from the elements by means of high-pressure and high-temperature methods in a modified Belt type apparatus (h-BN capsule, 3. 5GPa, 1700°C, and subsequent release of high pressure). Y₂Zn₁₇ crystallizes in the hexagonal system with lattice constants a=8. 9709 (8) Å, c=13. 1386 (8) Å, c/a=1. 4646, space group R 3 m (No. 166), and Z=3. Final residuals after refinement against F² were R₁=0. 0270, ωR₂=0. 0612 and S=1. 239 for 23 parameters and all 237 unique data. Y₂Zn₁₇ adopts Th₂Zn₁₇-type structure.