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Title: Equation of state for technetium from X-ray diffraction and first-principle calculations

Journal Article · · Journal of Physics and Chemistry of Solids

Here, the ambient temperature equation of state (EoS) of technetium metal has been measured by X-ray diffraction. The metal was compressed using a diamond anvil cell and using a 4:1 methanol-ethanol pressure transmitting medium. The maximum pressure achieved, as determined from the gold pressureEquation of state for technetium from X-ray diffraction and first-principle calculations scale, was 67 GPa. The compression data shows that the HCP phase of technetium is stable up to 67 GPa. The compression curve of technetium was also calculated using first-principles total-energy calculations. Utilizing a number of fitting strategies to compare the experimental and theoretical data it is determined that the Vinet equation of state with an ambient isothermal bulk modulus of B0T=288 GPa and a first pressure derivative of B'=5.9(2) best represent the compression behavior of technetium metal.

Research Organization:
Univ. of Nevada, Las Vegas, NV (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0001982; AC04-94AL85000; #DE-NA0001982; NA0001974; FG02-99ER45775; AC02-06CH11357
OSTI ID:
1332762
Alternate ID(s):
OSTI ID: 1333840; OSTI ID: 1359445
Report Number(s):
SAND-2015-0656J; PII: S0022369716300506
Journal Information:
Journal of Physics and Chemistry of Solids, Vol. 95, Issue C; ISSN 0022-3697
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

References (31)

T c and its pressure dependence for technetium-based h.c.p. solid solution alloys journal October 1975
∂Tc/∂P for technetium and a comment on its sign in relation to the other transition metal superconductors journal May 1968
Effect of Compression on the Decay Rate of Tc 9 9 m Metal journal February 1960
Effect of Pressure on the Decay Constant of Tc 9 9 m journal May 1972
Thermodynamic properties of technetium journal March 1989
Application of Electron Microscopy in the Observation of Technetium and Technetium Dioxide Nanostructures journal November 2008
New anvil designs in diamond-cells journal September 2004
Effective hydrostatic limits of pressure media for high-pressure crystallographic studies journal January 2007
Two-dimensional detector software: From real detector to idealised image or two-theta scan journal January 1996
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Atoms, molecules, solids, and surfaces: Applications of the generalized gradient approximation for exchange and correlation journal September 1992
Accurate and simple analytic representation of the electron-gas correlation energy journal June 1992
Structural and magnetic properties of Tc n @ C 60 endohedral metalofullerenes: First-principles predictions journal March 2010
Interplay between structure, stoichiometry and properties of technetium nitrides journal January 2011
Projector augmented-wave method journal December 1994
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
High-precision sampling for Brillouin-zone integration in metals journal August 1989
Special points for Brillouin-zone integrations journal June 1976
Isothermal equation of state for gold with a He-pressure medium journal September 2008
Compression curves of transition metals in the Mbar range: Experiments and projector augmented-wave calculations journal September 2008
Hydrostatic limits of 11 pressure transmitting media journal March 2009
Equation of state of rhenium and application for ultra high pressure calibration journal January 2014
Elastic moduli and Debye temperature of polycrystalline technetium by ultrasonic velocity measurements journal January 1970
Relation between Ultrasonically Measured Properties and the Coefficients in the Solid Equation of State journal July 1962
Implementation of micro-ball nanodiamond anvils for high-pressure studies above 6 Mbar journal January 2012
Effect of pressure and temperature on the lattice parameters of rhenium journal June 1970
High-pressure x-ray diffraction studies on rhenium up to 216 GPa (2.16 Mbar) journal December 1987
Theoretical isothermal equation of state of rhenium journal November 1988
Ultrasonic equation of state of rhenium journal February 1974
Elastic and Bonding Properties of Transition Metals journal September 1984
Bulk properties of the stabilized uniform ‘metallic’ electron gas in transition metals journal December 1996

Cited By (2)

Reverse-martensitic hcp-to-fcc transformation in technetium under shock compression journal July 2018
Zero-Kelvin Compression Isotherms of the Elements 1 ≤ Z ≤ 92 to 100 GPa journal December 2016

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