Article

Lattice parameters and thermal expansion of solid paradeuterium

A. I. ProkhvatilovB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences 310164 KharkovM. A. Strzhemechnyı̆B. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences 310164 KharkovG. N. ShcherbakovB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences 310164 Kharkov

Low Temperature Physicsjournal1994en

ABI

Abstract

Systematic data are obtained for the first time on the lattice parameters, molar volume, density, and the x-ray thermal expansion coefficients of the high-temperature hcp phase of p-D2 (xJ = 1 = 0.86) in the temperature interval 4.5–18.5 K. Quantitative characteristics of the effect of the quadrupole subsystem on structural (parameters and lattice volume) and thermodynamic (thermal expansion and Gruneisen’s constant) properties of deuterium are obtained from a comparison with the results of previous investigations of orthodeuterium (xJ = 1 = 0.025). It is shown that the effect is the strongest at low temperatures when the contribution from the rotational subsystem dominates.

Topics

Thermodynamic and Structural Properties of Metals and Alloys Quantum, superfluid, helium dynamics High-pressure geophysics and materials

Identifiers

DOI: 10.1063/10.0033684

Citations and references

Cited by 013 references

Metrics — AkademScholar