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Title: Shear-driven instability in zirconium at high pressure and temperature and its relationship to phase-boundary behaviors

Journal Article · · Physical Review B

Evidence in support of a shear driven anomaly in zirconium at elevated temperatures and pressures has been determined through the combined use of ultrasonic, diffractive, and radiographic techniques. Implications that these have on the phase diagram are explored through thermoacoustic parameters associated with the elasticity and thermal characteristics. In particular, our results illustrate a deviating phase boundary between the α and ω phases, referred to as a kink, at elevated temperatures and pressures. Furthermore, pair distribution studies of this material at more extreme temperatures and pressures illustrate the scale on which diffusion takes place in this material. Possible interpretation of these can be made through inspection of shear-driven anomalies in other systems.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; AC52-06NA25396; FG02-99ER45775; NA0001974
OSTI ID:
1349959
Alternate ID(s):
OSTI ID: 1352428
Report Number(s):
LA-UR-16-29589; PRBMDO; 134101
Journal Information:
Physical Review B, Journal Name: Physical Review B Vol. 95 Journal Issue: 13; ISSN 2469-9950
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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Multimode scanning X-ray diffraction microscopy for diamond anvil cell experiments journal February 2019

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