Vibronic fine structure in high-resolution x-ray absorption spectra from ion-bombarded boron nitride nanotubes

2013 ◽  
Vol 31 (3) ◽  
pp. 031405 ◽  
Author(s):  
Mladen Petravic ◽  
Robert Peter ◽  
Marijana Varasanec ◽  
Lu Hua Li ◽  
Ying Chen ◽  
...  
Keyword(s):  
Fine Structure ◽  
High Resolution ◽  
Boron Nitride ◽  
Absorption Spectra ◽  
Boron Nitride Nanotubes ◽  
X Ray ◽  
X Ray Absorption

Investigating the structure of boron nitride nanotubes by near-edge X-ray absorption fine structure (NEXAFS) spectroscopy

2005 ◽  
Vol 7 (6) ◽  
pp. 1103 ◽  
Author(s):  
Tirandai Hemraj-Benny ◽  
Sarbajit BanerjeeCurrent address: Department ◽  
Sharadha Sambasivan ◽  
Daniel A. Fischer ◽  
Weiqiang Han ◽  
...  
Keyword(s):  
Fine Structure ◽  
Boron Nitride ◽  
Boron Nitride Nanotubes ◽  
X Ray ◽  
Absorption Fine ◽  
Nexafs Spectroscopy ◽  
X Ray Absorption

X-RAY ABSORPTION SPECTRA OF SOME SMALL POLYATOMIC MOLECULES

2002 ◽  
Vol 09 (01) ◽  
pp. 159-164 ◽  
Author(s):  
K. C. PRINCE ◽  
R. RICHTER ◽  
M. DE SIMONE ◽  
M. CORENO
Keyword(s):  
Fine Structure ◽  
Excited State ◽  
High Resolution ◽  
Formic Acid ◽  
Absorption Spectra ◽  
Organic Molecules ◽  
Polyatomic Molecules ◽  
X Ray ◽  
Vibrational Progression ◽  
X Ray Absorption

We report the Near Edge X-ray Absorption Fine Structure Spectra (NEXAFS) of a series of oxygen-containing organic molecules, namely formaldehyde, acetaldehyde, acetone, formic acid, methanol and dimethyl ether (DME), measured with high resolution at the carbon and oxygen edges. A vibrational progression has been observed at the oxygen 1s → π* resonance of formaldehyde, indicating that this state is bound with an excited state C=O stretching frequency of 136 meV. The spectra are compared with previous measurements and the applicability of the chromophore concept is tested for the functional groups present in these molecules.

Electron-Vibron Coupling in High-Resolution X-Ray Absorption Spectra of Organic Materials: NTCDA on Ag(111)

2004 ◽  
Vol 93 (14) ◽  
Author(s):  
A. Schöll ◽  
Y. Zou ◽  
L. Kilian ◽  
D. Hübner ◽  
D. Gador ◽  
...  
Keyword(s):  
High Resolution ◽  
Absorption Spectra ◽  
Organic Materials ◽  
X Ray ◽  
X Ray Absorption

X-Ray Absorption Fine Structure Study in FeTiO3

1997 ◽  
Vol 11 (16n17) ◽  
pp. 745-748 ◽  
Author(s):  
Rebekah Min-Fang Hsu ◽  
Kai-Jan Lin ◽  
Cheng Tien ◽  
Lin-Yan Jang
Keyword(s):  
Absorption Spectrum ◽  
Fine Structure ◽  
Absorption Spectra ◽  
Mixed Valence ◽  
Structure Study ◽  
X Ray ◽  
Xafs Spectroscopy ◽  
Absorption Fine ◽  
Trivalent State ◽  
X Ray Absorption

X-ray absorption fine structure XAFS spectroscopy has been used to determine the valence system for the Fe atom in ilmenite, FeTiO3 . This is the first XAFS data in FeTiO3 to our knowledge. The α- Fe2O3 data served as the standard in determining the ionization of the Fe atom in FeTiO3 . Observation of intensity and k-space are consistent. There was no evidence of mixed valence on comparing the FeTiO3 near edge X-ray absorption spectrum with α- Fe2O3 data. The absorption spectra suggest that iron is in the trivalent state in ilmenite.

EFFECT OF HEAT TREATMENT ON MICROSTRUCTURE AND MAGNETOSTRICTIVE PROPERTY OF MELT-SPUN Fe85Ga15 RIBBONS

2013 ◽  
Vol 27 (30) ◽  
pp. 1350174 ◽  
Author(s):  
HAO LIU ◽  
HAIOU WANG ◽  
MENGXIONG CAO ◽  
WEISHI TAN ◽  
YANGGUANG SHI ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Fine Structure ◽  
High Resolution ◽  
Nearest Neighbor ◽  
Annealed Sample ◽  
X Ray Diffraction ◽  
X Ray ◽  
Absorption Fine ◽  
Melt Spun ◽  
X Ray Absorption

In order to study the microstructure of Fe – Ga alloy, Fe 85 Ga 15 ribbons prepared with different wheel velocity were studied by high resolution X-ray diffraction (HRXRD) and extend X-ray absorption fine structure (EXAFS). HRXRD patterns showed that only disordered A 2 phase was observed in as-cast Fe 85 Ga 15 alloy. A modified- DO 3 phase was detected in all of the melt spun samples. The HRXRD associated with EXAFS results indicated that Ga atoms were located as second-nearest neighbor along [100] orientation. A little DO 3 phase was found in ribbons annealed at 1000°C under 0.06 MPa Ar atmosphere. The result of magnetostriction measurement revealed that in the ribbon prepared with higher wheel velocity, more modified- DO 3 phase will enhance the magnetostriction. DO 3 phase in the annealed sample will deteriorate the magnetostrictive properties of Fe – Ga ribbons.

Extended Fine Structure in X-Ray Absorption Spectra of Certain Perovskites

1970 ◽  
Vol 2 (5) ◽  
pp. 1317-1323 ◽  
Author(s):  
Joseph Perel ◽  
Richard D. Deslattes
Keyword(s):  
Fine Structure ◽  
Absorption Spectra ◽  
X Ray ◽  
X Ray Absorption
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