A Combined Nuclear Magnetic Resonance and X-ray Absorption Fine Structure Study on the Local Structures of Ge and Pb in PbO−GeO2Glasses and Their Relationships with Thermal Properties and Devitrification Products

2002 ◽  
Vol 106 (38) ◽  
pp. 9802-9809 ◽  
Author(s):  
P. Ghigna ◽  
P. Mustarelli ◽  
C. Tomasi ◽  
E. Quartarone ◽  
M. Scavini ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fine Structure ◽  
Thermal Properties ◽  
Magnetic Resonance ◽  
Structure Study ◽  
X Ray ◽  
Local Structures ◽  
Absorption Fine ◽  
X Ray Absorption ◽  
Nuclear Magnetic

Fluorescence Extended X-Ray Absorption Fine Structure Study on Local Structures of Rare-Earth-Doped InGaGdN

2016 ◽  
Vol 1133 ◽  
pp. 429-433
Author(s):  
Siti Nooraya Mohd Tawil ◽  
Shuichi Emura ◽  
Daivasigamani Krishnamurthy ◽  
Hajime Asahi
Keyword(s):  
Fine Structure ◽  
Rare Earth ◽  
Nearest Neighbor ◽  
Structure Study ◽  
Edge Structure ◽  
X Ray ◽  
Local Structures ◽  
Absorption Fine ◽  
X Ray Absorption

Local structures around gadolinium atoms in rare-earth (RE)-doped InGaGdN thin films were studied by means of fluorescence extended X-ray absorption fine structure (EXAFS) measured at the Gd LIII-edges. The samples were doped with Gd in-situ during growth by plasma-assisted molecular beam epitaxy (PAMBE). Gd LIII-edge EXAFS signal from the GaGdN, GdN and Gd foil were also measured as reference. The X-ray absorption near edge structure (XANES) spectra around Gd LIII absorption edge of InGaGdN samples observed at room temperature indicated the enhancement of intensities with the increase of Gd composition. Further EXAFS analysis inferred that the Gd atoms in InGaN were surrounded by similar atomic shells as in the case of GaGdN with the evidence indicating majority of Gd atoms substituted into Ga sites of InGaGdN. A slight elongation of bond length for the 2nd nearest-neighbor (Gd–Ga) of sample with higher Gd concentration was also observed.

X-ray Absorption Fine Structure Study of the Local Structures of Activator Atoms in Gadolinium(3+) Oxy-Orthosilicate Single Crystal

2006 ◽  
Vol 45 (7) ◽  
pp. 5960-5965 ◽  
Author(s):  
Yasuhiro Yagi ◽  
Tatsuya Usui ◽  
Shigenori Shimizu ◽  
Kazuhisa Kurashige ◽  
Hiroyuki Ishibashi ◽  
...  
Keyword(s):  
Fine Structure ◽  
Single Crystal ◽  
Structure Study ◽  
X Ray ◽  
Local Structures ◽  
Absorption Fine ◽  
X Ray Absorption
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