Infrared absorption of hydrogen-related defects in strontium titanate

2011 ◽  
Vol 109 (6) ◽  
pp. 063706 ◽  
Author(s):  
M. C. Tarun ◽  
M. D. McCluskey
Keyword(s):  
Strontium Titanate ◽  
Infrared Absorption ◽  
Absorption Of Hydrogen

In situ photoacoustic analysis of near-infrared absorption of rhodium-doped strontium titanate photocatalyst powder

2020 ◽  
Vol 56 (91) ◽  
pp. 14255-14258
Author(s):  
Tatsuki Shinoda ◽  
Yuichi Yamaguchi ◽  
Akihiko Kudo ◽  
Naoya Murakami
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Strontium Titanate ◽  
Infrared Absorption ◽  
Near Infrared ◽  
Fourier Transform Infrared

Near-infrared absorption of strontium titanate (SrTiO3) doped with rhodium (Rh) was investigated by photoacoustic (PA) Fourier transform infrared spectroscopy.

PRESSURE-INDUCED INFRARED ABSORPTION OF HYDROGEN AND HYDROGEN – FOREIGN GAS MIXTURES IN THE RANGE 1500–5000 ATMOSPHERES

1958 ◽  
Vol 36 (1) ◽  
pp. 88-103 ◽  
Author(s):  
W. F. J. Hare ◽  
H. L. Welsh
Keyword(s):  
Absorption Coefficient ◽  
Infrared Absorption ◽  
Room Temperature ◽  
Pure Hydrogen ◽  
Vibrational Transition ◽  
Absorption Process ◽  
Quadrupole Interactions ◽  
Relative Kinetic ◽  
Very High ◽  
Absorption Of Hydrogen

The pressure-induced infrared absorption of hydrogen was studied in pure hydrogen and in hydrogen–helium, hydrogen–argon, and hydrogen–nitrogen mixtures at pressures up to 5000 atm. at room temperature. The integrated absorption coefficient can be expressed in the form α1ρaρp + α2ρaρp2 over the whole range of densities (ρa = density of H2, ρp = density of the perturbing gas, [Formula: see text] in the mixture experiments). The coefficient α2 is much smaller than predicted from the effect of finite molecular volumes; this is interpreted as a partial cancellation of the induced moments in ternary collisions. The splitting of the Q branch of the fundamental, which is due to the participation of the relative kinetic energies of the colliding molecules in the absorption process, increases linearly with the density because of ternary collisions; a more rapid increase observed at very high densities is not yet explained. The components of the overtone and double vibrational transition, like the QQ and S components of the fundamental, show no splitting or broadening with increasing density; these absorptions are believed to be due to quadrupole interactions while the QP and QR components of the fundamental are due to overlap interactions.

scholarly journals Infrared absorption of hydrogen-related defects in ammonothermal GaN

2016 ◽  
Vol 108 (20) ◽  
pp. 202105 ◽  
Author(s):  
Sami Suihkonen ◽  
Siddha Pimputkar ◽  
James S. Speck ◽  
Shuji Nakamura
Keyword(s):  
Infrared Absorption ◽  
Absorption Of Hydrogen

INFRARED ABSORPTION OF HYDROGEN AND DEUTERIUM IONS IN CALCIUM FLUORIDE

1965 ◽  
pp. 475-477 ◽  
Author(s):  
W. HAYES ◽  
G.D. JONES ◽  
R.J. ELLIOTT ◽  
C.T. SENNETT
Keyword(s):  
Infrared Absorption ◽  
Calcium Fluoride ◽  
Absorption Of Hydrogen
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