Results 21 to 30 of about 28,295 (284)

Local structural analyses on molten terbium fluoride in lithium fluoride and lithium–calcium fluoride mixtures [PDF]

, 2010
X-ray absorption fine structure (XAFS) measurements on terbium fluoride in molten lithium fluoride and in molten lithium–calcium fluoride mixtures, (e.g.
Akatsuka, Hiroshi, Bessada, Catherine, Chamelot, Pierre, Matsuura, Haruaki, Nezu, Atsushi, Numakura, Masahiko, Okamoto, Yoshihiro, Pauvert, Olivier, Shimohara, Yasuaki, Shiwaku, Hideaki, Tajima, Keisuke, Yaita, Tsuyoshi, Zanghi, Didier   +12 more
core   +2 more sources

Dispersion and stability mechanism of Pt nanoparticles on transition-metal oxides

Scientific Reports, 2022
The heterogeneous catalysts of Pt/transition-metal oxides are typically synthesized through calcination at 500 °C, and Pt nanoparticles are uniformly and highly dispersed when hydrogen peroxide (H2O2) is applied before calcination.
Eun-Suk Jeong, In-Hui Hwang, Sang-Wook Han   +2 more
doaj   +1 more source

Transmission properties of the X-ray window for the SIXA spectrometer [PDF]

, 1996
The ultrathin X-ray entrance window for the spaceborne spectrometer SIXA was characterised using synchrotron radiation. X-ray absorption fine structure near the absorption edges of the constituting elements (aluminium, carbon, oxygen and nitrogen) was ...
Huovelin, J., Tikkanen, T.
core   +2 more sources

Revisiting the crystal structure of the equilibrium S (Al2CuMg) phase in Al–Cu–Mg alloys using X-ray absorption spectroscopy (XAFS) [PDF]

Materialia, 2019
Even though, the crystal structure of the intermediate (S') and the equilibrium S (Al2CuMg) phase were subject of many investigations by using mostly imaging or diffraction techniques, the results remain still controversial.
D. Petschke, Frank Lotter, T. Staab
semanticscholar   +1 more source

Detection the structure-activity relationship of  platinum-bismuth catalyst in methane oxidation by X-ray adsorption fine structure

He jishu, 2021
Background060102PurposeThis study aims to detect the interaction between platinum (Pt) and bismuth (Bi) species and their "structure-activity" relationship in methane oxidation through X-ray absorption fine structure (XAFS) technology.MethodsFirst of all,
NAN Bing, HUANG Yuying, LI Lina
doaj   +1 more source

Oxybarometry and valence quantification based on microscale X-ray absorption fine structure (XAFS) spectroscopy of multivalent elements

, 2020
X-ray absorption fine structure (XAFS) spectroscopy has proven to be a valuable tool in defining valence states of multivalent elements in minerals and glasses that can then be used as oxybarometry proxies. First row transition multivalent elements Ti, V,
S. Sutton, A. Lanzirotti, M. Newville, M. Dyar, J. Delaney   +4 more
semanticscholar   +1 more source

Understanding the role of promoters in catalysis: operando XAFS/DRIFTS study of CeO_x/Pt/Al₂O₃ during CO oxidation [PDF]

, 2017
A combined operando XAFS/DRIFTS study on CeOx/Pt/Al2O3 catalysts has been performed during CO oxidation and provides insights into the changes in nanoparticle structure and adsorbed species during the reaction profile. The onset of CO2 formation is shown
Crabb, E. M., Gianolio, D., Gibson, E. K., Russell, A. E., Thompsett, D., Wells, P. P.   +5 more
core   +2 more sources

Development and tests of a new prototype detector for the XAFS beamline at Elettra Synchrotron in Trieste [PDF]

, 2016
The XAFS beamline at Elettra Synchrotron in Trieste combines X-ray absorption spectroscopy and X-ray diffraction to provide chemically specific structural information of materials.
Ahangarianabhari, M, Baldazzi, G, Bellutti, P, Bertuccio, G, Bruschi, M, Bufon, J, Carrato, S, Castoldi, A, Cautero, G, Ciano, S, Cicuttin, A, Crespo, M L, Fabiani, S, Gandola, M, Garcia, V Villaverde, Giacomini, G, Giuressi, D, Guazzoni, C, Menk, R H, Niemela, J, Olivi, L, Picciotto, A, Piemonte, C, Rachevski, A, Rashevskaya, I, Rignanese, L P, Santos, M Dos, Sbrizzi, A, Schillani, S, Vacchi, A, Zampa, G, Zampa, N, Zorzi, N   +32 more
core   +2 more sources

Chemical analysis by X-ray spectroscopy near phase transitions in the solid state [PDF]

, 2002
The methods discussed in this work show that the types of changes which may be observed, by precise XAS measurements of Absorbance A versus temperature, across a phase transition are: the changes in the relaxation time of the final states due to ...
Acrivos, Juana Vivó, Honig, J. M, Liang, W. Y, Lin, C. T, Nguyen, L., Norman, T., Somasundaran, P   +6 more
core   +2 more sources

Decoupling of the Antiferromagnetic and Insulating States in Tb doped Sr2IrO4 [PDF]

, 2015
Sr2IrO4 is a spin-orbit coupled insulator with an antiferromagnetic (AFM) transition at TN=240 K. We report results of a comprehensive study of single-crystal Sr2Ir1-xTbxO4.
Aswartham, S., Cao, G., Chikara, Shalinee, Choi, Yong, Custelcean, Radu, Haskel, Daniel, Schlottmann, P., Terzic, J., Wang, J. C., Ye, Feng, Yuan, S. J., Zheng, H.   +11 more
core   +3 more sources