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Title: Lattice dynamics and thermomechanical properties of zirconium(IV) chloride: Evidence for low-temperature negative thermal expansion

Journal Article · · Chemical Physics Letters
 [1];  [2];  [3];  [3]
  1. Univ. of Nevada, Las Vegas, NV (United States). Department of Physics and Astronomy
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. Univ. of Nevada, Las Vegas, NV (United States). Department of Chemistry

For this research, the crystal structure, lattice dynamics and themomechanical properties of bulk monoclinic zirconium tetrachloride (ZrCl4) have been investigated using zero-damping dispersion-corrected density functional theory [DFT-D3(zero)]. Phonon analysis reveals that ZrCl4(cr) undergoes negative thermal expansion (NTE) near T≈10 K, with a coefficient of thermal expansion of α=-1.2 ppm K-1 and a Grüneisen parameter of γ=-1.1. The bulk modulus is predicted to vary from K0=8.7 to 7.0 GPa in the temperature range 0–550 K. Lastly, the isobaric molar heat capacity derived from phonon calculations within the quasi-harmonic approximation is in fair agreement with existing calorimetric data.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Nuclear Energy (NE)
Grant/Contract Number:
AC04-94AL85000; NA0003525
OSTI ID:
1411613
Alternate ID(s):
OSTI ID: 1576822
Report Number(s):
SAND-2017-9739J; PII: S0009261417310084; TRN: US1800250
Journal Information:
Chemical Physics Letters, Vol. 691, Issue C; ISSN 0009-2614
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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Cited By (2)