Effect of pressure on the atom positions in Se and Te

1977/11/15 by R. Keller, W. B. Holzapfel, Heinz Schulz +1 · 2 citations
Materials Science · Earth and Planetary Sciences · #Solid-state spectroscopy and crystallography #High-pressure geophysics and materials #Crystal Structures and Properties

paper · doi:10.1103/physrevb.16.4404

Abstract

The effect of pressure on atomic positions and lattice parameters is determined for trigonal Se under pressures from 0 to 86 kbar and for trigonal Te from 0 to 40 kbar by single-crystal x-ray diffraction using a diamond anvil high-pressure cell in a standard precession camera. The structural data confirm the lattice-dynamical homology that had been observed in the variation of the Raman frequencies at low pressures. However, the strongly nonlinear variations in the interatomic distances and the bond angles show deviations from a structural homology as the high-pressure phase transitions are approached.

Cited by

• First-principles calculation of electronic and topological properties of low-dimensional tellurium
• Intrinsic point defect tolerance in selenium for indoor and tandem photovoltaics

Related

• High pressure phases of crystalline tellurium
• Two-step phase transitions in Fe(Se,Te)
• High pressure lattice dynamics study of few layer-α-In₂Se₃
• The pressure dependence of the phonon spectra and elastic modulus of orthorhombic : the method of local density functional
• High pressure structural and lattice dynamics study of α-In₂Se₃