Search Results - "Ruoff, AL"

Solid hydrogen at 342 GPa: no evidence for an alkali metal by Ruoff, Arthur L, Narayana, Chandrabhas, Luo, Huan, Orloff, Jon

“…Solid hydrogen, an electrical insulator, is predicted to become an alkali metal under extreme compression, although controversy surrounds the pressure required…”
Get full text

Convenient optical pressure gauge for multimegabar pressures calibrated to 300 GPa by Sun, Liling, Ruoff, Arthur L., Stupian, Gary

“…The accurate measurement of pressure by a straightforward and inexpensive optical procedure has been needed in the multimegabar region since static pressures…”
Get full text

High-pressure X-ray structural study of BeO and ZnO to 200 GPa by Mori, Y., Niiya, N., Ukegawa, K., Mizuno, T., Takarabe, K., Ruoff, A. L.

“…We have carried out high‐pressure X‐ray structural studies of BeO and ZnO up to 200 GPa to find the phase transition of BeO from the wurzite to the NaCl…”
Get full text

Al as a simple solid: High pressure study to 220 GPa (2.2 Mbar) by Greene, RG, Luo, H, Ruoff, AL

“…The static equation of state of Al has been measured to 220 GPa, corresponding to a compression of [ital V]/[ital V][sub 0]=0.50. No phase transformation from…”
Get full text

Is C60 stiffer than diamond? by RUOFF, RODNEY S., RUOFF, ARTHUR L.

Get full text

β-Po phase of sulfur at 162 GPa : X-ray diffraction study to 212 GPa by HUAN LUO, GREENE, R. G, RUOFF, A. L

Get full text

High-pressure optical studies on sulfur to 121 GPa - Optical evidence for metallization by Luo, Huan, Desgreniers, Serge, VOHRA, YOGESHK, RUOFF, ARTHURL

“…The pressure dependence of the optical absorption edge to 78 GPa and the reflectivity to 121 GPa were measured in sulfur from 0.5 to 3.5 eV in a diamond anvil…”
Get full text

New high-pressure phase transition in zirconium metal by HUI XIA, DUCLOS, S. J, RUOFF, A. L, VOHRA, V. K

“…Phase transitions in the group-IV transition metal Zr were studied by the energy-dispersive X-ray diffraction technique with a synchrotron source to a pressure…”
Get full text

Evidence of an intermediate high-pressure phase in BaFBr and BaFI by Subramanian, N, Chandra Shekar, N.V, Sahu, P.Ch, Govinda Rajan, K, Ruoff, A.L

“…Structural behaviour of BaFX (X=Br or I) has been studied under pressure using powder X-ray diffraction method. Both systems show a gradual pressure-induced…”
Get full text

High pressure phase of MgTe: Stable structure at STP? by Li, T, Luo, H, Greene, RG, Ruoff, AL, Trail, SS, DiSalvo, Jr, FJ

Get full text

The bulk modulus of C60 molecules and crystals : a molecular mechanics approach by RUOFF, R. S, RUOFF, A. L

“…In this letter, the bulk modulus of an individual C60 molecule is calculated in terms of the C,C bond force constant. A range of values for the bulk modulus is…”
Get full text

Phase transformation of AlAs to NiAs structure at high pressure by Greene, RG, Luo, H, Li, T, Ruoff, AL

“…The crystal structure of AlAs has been studied in a diamond anvil cell using energy-dispersive x-ray diffraction to 46 GPa. AlAs undergoes a first order phase…”
Get full text

Sevenfold Coordinated MgSe: Experimental Internal Atom Position Determination to 146 GPa, Diffraction Studies to 202 GPa, and Theoretical Studies to 500 GPa by Ruoff, Arthur L., Li, Ting, Ho, Allen C., Pai, Min-Fan, Luo, Huan, Greene, Ray G., Narayana, Chandrabhas, Molstad, Jay C., Trail, Steven S., DiSalvo, Francis J., van Camp, P. E.

Get full text

Pressure Induced Metastable Amorphization of BAs: Evidence for a Kinetically Frustrated Phase Transformation by Greene, RG, Luo, H, Ruoff, AL, Trail, SS, DiSalvo, Jr, FJ

“…A transformation from the zinc blende (zb) to an amorphous crystal structure was observed at 125 GPa, just slightly above the calculated equilibrium transition…”
Get full text

New high pressure crystal structure and equation of state of cesium hydride to 253 GPa by Ghandehari, K, Luo, H, Ruoff, AL, Trail, SS, DiSalvo, FJ

Get full text

High pressure X-ray and Raman study of ZnSe by Greene, Raymond G., Luo, Huan, Ruoff, Arthur L.

“…ZnSe has been studied in a diamond anvil cell by energy dispersive X-ray diffraction with a synchrotron source to 120 GPa and by Raman spectroscopy to 11 GPa…”
Get full text

Gallium Nitride Synthesis Using Lithium Metal as a Nitrogen Fixant by Barry, Seán T, Ruoff, Stephen A, Ruoff, Arthur L

“…Micron-sized particles of gallium nitride were synthesized at temperatures as low as 300 °C under ammonia in anhydrous conditions. Two different syntheses were…”
Get full text

Evidence for the insulator-metal transition in xenon from optical, X-ray, and band-structure studies to 170 GPa by REICHLIN, R, BRISTER, K. E, MCMAHAN, A. K, ROSS, M, MARTIN, S, VOHRRA, Y. K, RUOFF, A. L

“…The equation of state and optical absorption of condensed Xe have been measured in a diamond-anvil cell up to 172 GPa. Pressures were determined by use of the…”
Get full text

hcp-to-fcc transition in silicon at 78 GPa and studies to 100 GPa by DUCLOS, S. J, VOHRA, Y. K, RUOFF, A. L

“…The pressure-induced phase sequence of silicon has been studied up to 100 GPa by energy-dispersive X-ray diffraction techniques. A new phase transition from…”
Get full text

Band gap and index of refraction of CsH to 251 GPa by Ghandehari, Kouros, Luo, Huan, Ruoff, Arthur L., Trail, Steven S., DiSalvo, Francis J.

“…Optical transmission and reflectivity measurements were made on CsH to 251 GPa. The index of refraction for CsH, obtained from reflectivity measurements,…”
Get full text