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Home Pressure Calibration to 100 kbar Based on the Compression of NaCl

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Pressure Calibration to 100 kbar Based on the Compression of NaCl

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Permanent URL	http://hdl.lib.byu.edu/1877/1345
Title	Pressure Calibration to 100 kbar Based on the Compression of NaCl
BYU Creator	Jeffrey, R. N. Barnett, J. Dean Vanfleet, H. B. Hall, H. Tracy
Keywords	pressure calibration; NaCl compression; transformation pressures;
Description/Abstract	An independent determination has been made of the transformation pressures assigned to the high-pressure transformations in Ba and Bi which are generally used for calibration points. The metals were imbedded in NaCl, and the transitions were detected by the resistance change of the metal while the NaCl lattice parameter was simultaneously measured by x-ray diffraction. The NaCl compression values determined at the fixed points were related to pressure by reference to the semiempirical compression curve of Decker. The Ba I-II and Bi III-V transformations at room temperature were assigned thermodynamic equilibrium values of 53.3 ±1.2 kbar and 73.8 ±1.3 kbar, respectively, corresponding to NaCl linear compression values of ∆a/a0=0.0510 and 0.0637, respectively. Hysteresis in the transformation pressures was investigated and sample hysteresis was separated from apparatus hysteresis. The hysteresis measurements imply a stress energy which inhibits nucleation of the new phase and causes a sizable sample hysteresis in solid-media systems.
Source	Jeffery, R. N., J. D. Barnett, H. B. Vanfleet, and H. T. Hall."Pressure Calibration to 100 kbar Based on the Compression of NaCl." Journal of Applied Physics 37 (1966): 3172-3180.;
Publisher	AIP
Date Original	1966-07-01
Language	English eng en
Publication Type	Articles
Type	Text
Format	application/pdf
Owning Institution	Brigham Young University
BYU College	College of Physical and Mathematical Sciences
BYU Department	Physics and Astronomy
Copyright Status	(c) 1966 American Institue of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics and may be found at http://link.aip.org/link/?JAPIAU/37/3172/1;
Copyright Use Information	http://www.lib.byu.edu/generic_copyright.html

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