A Synchrotron Radiation X-ray Photoemission Spectroscopy Study of n-Propyltriethoxysilane Adsorption on Si(001)-2 × 1 at Room Temperature

2010 ◽  
Vol 114 (49) ◽  
pp. 21450-21456 ◽  
Author(s):  
J.-J. Gallet ◽  
F. Bournel ◽  
D. Pierucci ◽  
M. Bonato ◽  
A. Khaliq ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Room Temperature ◽  
Photoemission Spectroscopy ◽  
Spectroscopy Study ◽  
X Ray

PHOTOEMISSION STUDY OF THE GADOLINIUM/GaAs(100) INTERFACE WITH SYNCHROTRON RADIATION

1997 ◽  
Vol 04 (01) ◽  
pp. 25-31 ◽  
Author(s):  
SHIHONG XU ◽  
FAPEI ZHANG ◽  
ERDONG LU ◽  
XIAOJIANG YU ◽  
FAQIANG XU ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Epitaxial Growth ◽  
Room Temperature ◽  
Interface Structure ◽  
Binding Energies ◽  
Photoemission Spectroscopy ◽  
Interface Formation ◽  
X Ray ◽  
Solution Density ◽  
Photoemission Study

Soft-X-ray photoemission spectroscopy was used to characterize the Gd/GaAs(100)-interface formation at room temperature. At low Gd coverage (<1 Å), the interface is near-abrupt, because no evidence of reaction is observed. With increasing Gd coverage, photoemission signals from chemically reacted product at the interface are observed, causing some intermixing between the overlayer and the substrate. For As atoms, they remain near the interface and have little diffusion. Ga atoms, however, are not kept near the interface, and they can diffuse into the Gd overlayer and segregate onto the surface instead. From the observed variations with metal coverage of binding energies and relative intensities of photoemission signals from the reacted layer, a profile of the interface structure is proposed, and some parameters (decaying length, segregation density and solution density, etc.) have been obtained. The results show that the deposition of Gd onto the GaAs (100) surface induces limited substrate disruption except for some diffusion and segregation of Ga atoms into the metal overlayer. This paper demonstrates that the disruption and epitaxial growth are not mutually exclusive in the Gd / GaAs (100) system.

scholarly journals High-Pressure Spectroscopy Study of Zn(IO3)2 Using Far-Infrared Synchrotron Radiation

Crystals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 34
Author(s):  
Akun Liang ◽  
Robin Turnbull ◽  
Enrico Bandiello ◽  
Ibraheem Yousef ◽  
Catalin Popescu ◽  
...  
Keyword(s):  
High Pressure ◽  
Phase Transitions ◽  
Synchrotron Radiation ◽  
Infrared Radiation ◽  
Room Temperature ◽  
Far Infrared ◽  
Low Pressure ◽  
Pressure Response ◽  
Spectroscopy Study ◽  
Far Infrared Radiation

We report the first high-pressure spectroscopy study on Zn(IO3)2 using synchrotron far-infrared radiation. Spectroscopy was conducted up to pressures of 17 GPa at room temperature. Twenty-five phonons were identified below 600 cm−1 for the initial monoclinic low-pressure polymorph of Zn(IO3)2. The pressure response of the modes with wavenumbers above 150 cm−1 has been characterized, with modes exhibiting non-linear responses and frequency discontinuities that have been proposed to be related to the existence of phase transitions. Analysis of the high-pressure spectra acquired on compression indicates that Zn(IO3)2 undergoes subtle phase transitions around 3 and 8 GPa, followed by a more drastic transition around 13 GPa.

Impedance Spectroscopy Study of LiTaO3 Powder Synthesized via Sol-Gel Method

2012 ◽  
Vol 545 ◽  
pp. 275-278 ◽  
Author(s):  
Lili Widarti Zainuddin ◽  
Norlida Kamarulzaman
Keyword(s):  
Room Temperature ◽  
Single Phase ◽  
Sol Gel ◽  
Rhombohedral Structure ◽  
Spectroscopy Study ◽  
X Ray Diffraction ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Impedance Spectroscopy Study

A ceramics sample of LiTaO3 was prepared using a sol-gel method. The sample is annealed at 750 °C for 48 hours. X-ray diffraction analysis indicate the formation of single phase, rhombohedral structure. An ac impedance study was used to analyse the conductivity of LiTaO3 at room temperature and at various temperatures.

X-ray photoemission spectroscopy study of zirconium hydride

1979 ◽  
Vol 19 (6) ◽  
pp. 2856-2863 ◽  
Author(s):  
B. W. Veal ◽  
D. J. Lam ◽  
D. G. Westlake
Keyword(s):  
Zirconium Hydride ◽  
Photoemission Spectroscopy ◽  
Spectroscopy Study ◽  
X Ray

scholarly journals Protein–ligand complex structure from serial femtosecond crystallography using soaked thermolysin microcrystals and comparison with structures from synchrotron radiation

2017 ◽  
Vol 73 (8) ◽  
pp. 702-709 ◽  
Author(s):  
Hisashi Naitow ◽  
Yoshinori Matsuura ◽  
Kensuke Tono ◽  
Yasumasa Joti ◽  
Takashi Kameshima ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Room Temperature ◽  
Complex Structure ◽  
Binding Mode ◽  
Ligand Complex ◽  
X Ray ◽  
Cell Parameters ◽  
Serial Femtosecond Crystallography ◽  
Small Molecule Ligand

Serial femtosecond crystallography (SFX) with an X-ray free-electron laser is used for the structural determination of proteins from a large number of microcrystals at room temperature. To examine the feasibility of pharmaceutical applications of SFX, a ligand-soaking experiment using thermolysin microcrystals has been performed using SFX. The results were compared with those from a conventional experiment with synchrotron radiation (SR) at 100 K. A protein–ligand complex structure was successfully obtained from an SFX experiment using microcrystals soaked with a small-molecule ligand; both oil-based and water-based crystal carriers gave essentially the same results. In a comparison of the SFX and SR structures, clear differences were observed in the unit-cell parameters, in the alternate conformation of side chains, in the degree of water coordination and in the ligand-binding mode.

Soft X-ray synchrotron radiation spectroscopy study of the Co0.6Fe0.9Mn1.5O4 spinel with nano-checkerboard patterns

2013 ◽  
Vol 62 (12) ◽  
pp. 1990-1993
Author(s):  
D. H. Kim ◽  
Jihoon Hwang ◽  
Eunsook Lee ◽  
J. -S. Kang ◽  
C. L. Zhang ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Spectroscopy Study ◽  
X Ray

X-ray-photoemission-spectroscopy and bremsstrahlung-isochromat-spectroscopy study of the (Y,U)B4system

1986 ◽  
Vol 34 (6) ◽  
pp. 3737-3740 ◽  
Author(s):  
D. D. Sarma ◽  
S. Krummacher ◽  
A. Wallash ◽  
J. E. Crow
Keyword(s):  
Photoemission Spectroscopy ◽  
Spectroscopy Study ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document