Zobrazeno 1 - 10
of 413
pro vyhledávání: '"M. B. Kruger"'
Publikováno v:
Review of Scientific Instruments. 65:3540-3543
Small holes are drilled in diamond anvil cell gaskets to contain and pressurize samples. As high‐pressure technology pushes the multimegabar regime, smaller‐tipped diamond anvils are being increasingly utilized. Consequently, well‐centered hole
Autor:
Alain Polian, Jean-Paul Itié, Raymond Jeanloz, R. Dean Taylor, M. B. Kruger, Moshe P. Pasternak
Publikováno v:
Physical Review Letters. 72:2733-2736
X-ray, M\"ossbauer spectroscopy, and extended x-ray absorption fine structure studies provide an atomic-scale description of the pressure-amorphized ${\mathrm{Ge}}_{4}$. At Pg12 GPa a gradual onset of structural disorder accompanied by a molecular-as
Publikováno v:
Journal of Geophysical Research: Solid Earth. 98:22157-22170
High-pressure infrared absorption spectra of alpha-quatz, coesite, stishovite, and SiO2 glass are consistent with the primary compression mechanism of the initially tetrahedrally bonded phases being the bending of the Si-O-Si angle at pressures less
Autor:
M. B. Kruger, J. N. Heyman, J.W. Beeman, Raymond Jeanloz, Eugene E. Haller, J.G. Guitron, Wladek Walukiewicz, Edith Bourret, J. A. Wolk
Publikováno v:
Materials Science Forum. :757-762
The authors report the first use of the diamond anvil cell to observe the local modes of impurities in GaAs under large hydrostatic pressure by Fourier Transform Spectroscopy. These observations were accomplished by constructing a monolithic assembly
Publikováno v:
Semiconductor Science and Technology. 6:B78-B83
The authors report the observation of a new local vibrational mode (LVM) in hydrostatically stressed Si-doped GaAs. The corresponding infrared absorption peak is distinct from the SiGa shallow-donor LVM peak, which is the only other LVM peak observed
Publikováno v:
Physical Review Letters. 66:774-777
We report the observation of a local vibrational mode (LVM) in hydrostatically stressed, Si-doped GaAs. The corresponding infrared absorption peak is distinct from the ${\mathrm{Si}}_{\mathrm{Ga}}$ shallow-donor LVM peak and is assigned to the Si DX
Autor:
Raymond Jeanloz, M. B. Kruger, R. D. Taylor, Moshe P. Pasternak, Angelica M. Stacy, Steven R. Bohlen, Barry S. Snyder
Publikováno v:
Science (New York, N.Y.). 255(5045)
Amorphous Fe(2)SiO(4) synthesized at elevated pressures exhibits a Neel transition at a temperature identical to that observed in the crystalline form, T(N) = 65 (+/-2) kelvin at zero pressure. This behavior contrasts sharply with observations on oth
Publikováno v:
Acta psychiatrica Scandinavica. 82(5)
A comparative outcome study of 2 contrasting activity-based groups with 80 hospitalized nonpsychotic patients is described. One group focused on activities designed to evoke emotional or interpersonal reactions followed by a subsequent reflection. Th
Publikováno v:
ChemInform. 21
The effects of compression on the structure and bonding of Mg(OH)2 brucite and Ca(OH)2 portlandite are documented to pressures of 34 and 24 GPa, respectively, by way of infrared spectroscopy of the O–H stretching vibration at 300 K. The frequency o
Publikováno v:
Journal of Physics: Condensed Matter. 19:436214
Pressure-induced phase transitions in the nanocrystals of $ReO_3$ with an average diameter of \sim 12 nm have been investigated in detail by using synchrotron x-ray diffraction and the results compared with the literature data of bulk samples of $ReO