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Title: A new high pressure and temperature equation of state of fcc cobalt

Abstract

The high pressure and temperature equation of state of cobalt metal in the face-centered cubic phase was measured up to 57 GPa and 2400 K using the laser heated diamond anvil cell in conjunction with synchrotron X-ray diffraction. The measured region is bisected by a ferromagnetic to paramagnetic transition across the Curie temperature necessitating use of an equation of state that incorporates a 2nd order phase transition within its formalism. A third order Birch-Murnaghan equation of state with a Mie-Grüneisen-Debye thermal correction and a Hillert-Jarl magnetic correction is employed to describe the data above and below the Curie temperature. Furthermore, we find best fit parameters of V0 = 6.753 (fixed) cm3/mol, K0 – 196 (3) GPa, K' – 4.7 (2), γ0 – 2.00 (11), q – 1.3 (5), and θ0 – 385 K (fixed).

Authors:
;
Publication Date:
Research Org.:
Carnegie Institution of Washington, Washington, D.C. (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1226675
Alternate Identifier(s):
OSTI ID: 1335841; OSTI ID: 1420725
Grant/Contract Number:  
NA0002006
Resource Type:
Journal Article: Published Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Name: Journal of Applied Physics Journal Volume: 118 Journal Issue: 19; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; synchrotron X-ray diffraction; cobalt; ferromagnetic; equation of state; high pressure; diamond anvil cell; laser heating

Citation Formats

Armentrout, Matthew M., and Kavner, Abby. A new high pressure and temperature equation of state of fcc cobalt. United States: N. p., 2015. Web. doi:10.1063/1.4935087.
Armentrout, Matthew M., & Kavner, Abby. A new high pressure and temperature equation of state of fcc cobalt. United States. https://doi.org/10.1063/1.4935087
Armentrout, Matthew M., and Kavner, Abby. 2015. "A new high pressure and temperature equation of state of fcc cobalt". United States. https://doi.org/10.1063/1.4935087.
@article{osti_1226675,
title = {A new high pressure and temperature equation of state of fcc cobalt},
author = {Armentrout, Matthew M. and Kavner, Abby},
abstractNote = {The high pressure and temperature equation of state of cobalt metal in the face-centered cubic phase was measured up to 57 GPa and 2400 K using the laser heated diamond anvil cell in conjunction with synchrotron X-ray diffraction. The measured region is bisected by a ferromagnetic to paramagnetic transition across the Curie temperature necessitating use of an equation of state that incorporates a 2nd order phase transition within its formalism. A third order Birch-Murnaghan equation of state with a Mie-Grüneisen-Debye thermal correction and a Hillert-Jarl magnetic correction is employed to describe the data above and below the Curie temperature. Furthermore, we find best fit parameters of V0 = 6.753 (fixed) cm3/mol, K0 – 196 (3) GPa, K' – 4.7 (2), γ0 – 2.00 (11), q – 1.3 (5), and θ0 – 385 K (fixed).},
doi = {10.1063/1.4935087},
url = {https://www.osti.gov/biblio/1226675}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 19,
volume = 118,
place = {United States},
year = {Sat Nov 21 00:00:00 EST 2015},
month = {Sat Nov 21 00:00:00 EST 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at https://doi.org/10.1063/1.4935087

Citation Metrics:
Cited by: 5 works
Citation information provided by
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Works referenced in this record:

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