Identification of An Interstitial Carbon – Interstitial oxygen Complex in Silicon

1987 ◽  
Vol 104 ◽  
Author(s):  
J. M. Trombetta ◽  
G. D. Watkins
Keyword(s):  
Carbon Atom ◽  
Oxygen Atom ◽  
Lattice Relaxation ◽  
Luminescence Spectra ◽  
Interstitial Oxygen ◽  
Epr Spectrum ◽  
Interstitial Carbon ◽  
Oxygen Complex ◽  
Interaction Tensor ◽  
Carbon Interstitial

ABSTRACTThe Si-G15 EPR spectrum and the 0.79eV “C-line” luminescence spectra in silicon are shown to arise from an interstitial carbon - interstitial oxygen complex. The g-tensor and 13C hyperfine interaction tensor indicate the structure in the vicinity of the carbon atom while stress alignment studies reveal the configuration near the oxygen atom. The pairing of the two impurities leads to a lattice relaxation which serves to stabilize the complex against dissociation.

DLTS Studies of Carbon Related Complexes in Irradiated N- and P-Silicon

2009 ◽  
Vol 156-158 ◽  
pp. 155-160 ◽  
Author(s):  
L.F. Makarenko ◽  
F.P. Korshunov ◽  
Stanislav B. Lastovskii ◽  
L.I. Murin ◽  
Michael Moll
Keyword(s):  
Energy Level ◽  
Crystallographic Orientation ◽  
Room Temperature ◽  
Interstitial Oxygen ◽  
Transformation Kinetics ◽  
Interstitial Carbon ◽  
Oxygen Complex ◽  
Carbon Interstitial ◽  
P Type ◽  
Kinetics Of

DLTS studies of transformation kinetics of different carbon–related complexes in electron irradiated n- and p-type silicon have been performed. It has been found that silicon self-interstitials have very low mobility even at room temperature in p-Si, but become extremely mobile under elec-tron injection. It is shown that upon annealing of interstitial carbon in p-Si a metastable state for interstitial carbon-interstitial oxygen complex is formed. This state has an energy level of about Еv+0.36 eV. The formation of the stable and metastable states takes place concurrently. The observed features of the carbon-related complexes formation are likely related to the existence of different crystallographic orientation of the equiprobable pathways through which the interstitial carbon and oxygen atoms can approach each other.

An atomic resolution study of a carbide phase in platinum

1992 ◽  
Vol 50 (1) ◽  
pp. 20-21
Author(s):  
M.J. Witcomb ◽  
M.A. O'Keefe ◽  
CJ. Echer ◽  
C. Nelson ◽  
J.H. Turner ◽  
...  
Keyword(s):  
Solid Solution ◽  
Carbon Atom ◽  
Carbide Phase ◽  
Structural Changes ◽  
Critical Role ◽  
Alloy System ◽  
Atomic Resolution ◽  
Excess Carbon ◽  
Interstitial Carbon ◽  
Resolution Study

Under normal circumstances, Pt dissolves only a very small amount of interstitial carbon in solid solution. Even so, an appropriate quench/age treatment leads to the formation of stable Pt2C {100} plate precipitates. Excess (quenched-in) vacancies play a critical role in the process by accommodating the volume and structural changes that accompany the transformation. This alloy system exhibits other interesting properties. Due to a large vacancy/carbon atom binding energy, Pt can absorb excess carbon at high temperatures in a carburizing atmosphere. In regions rich in carbon and vacancies, another carbide phase, Pt7C which undergoes an order-disorder reaction was formed. The present study of Pt carburized at 1160°C and aged at 515°C shows that other carbides in the PtxC series can be produced.

Sleeping under Trees at Night is not Healthful; Sleeping during the Day is Healthful – Forming CO (CO2) and their Dissociation

2021 ◽  
Author(s):  
Mubarak Ali
Keyword(s):  
Carbon Atom ◽  
Oxygen Atom ◽  
Oxygen Concentration ◽  
Ground Surface ◽  
Ground Level ◽  
Graphitic Carbon ◽  
Field Variation ◽  
Gaseous State ◽  
Sustainable Environment ◽  
The One

<p>A carbon atom keeps a non-preserved behavior because of converting into another state. This character makes it adjacently coincide with oxygen atom when it is in the gaseous state. A field variation develops for the day and night. On having the suitable interaction of photons with leaves in daytime, pieces of arc-shaped energy are made. To get the ground surface, the pieces of arc-shaped energy become empty due to the highest value of gravity at ground level. On sunset, empty pieces of arc-shaped energy fill with the force having the levitating nature, so they start flying to gather under the tree roof. Such filled force pieces develop the affinity in adjacently coinciding atoms of gaseous carbon and oxygen. At certain behavior of force, the downward ends of filled force pieces enter into the suitable unfilled states of gaseous atoms adhering the binding of C - O or O - C - O. So, a large number of CO and CO<sub>2</sub> molecules develops under the tree roof, which is not good for breathing during the night. In the morning, an arc-shaped energy breaks the affinity in CO and CO<sub>2</sub> molecules by giving back the filled force. As a result, the molecules dissociate into the atoms. To get the ground surface, the dissociated gaseous carbon atoms converted into graphitic carbon before noon. So, the oxygen concentration during sunshine increases under the tree roof thereby improving the breathing level of the one resting in the shadow. So, COVID-19 patients can take advantage of the raised level of oxygen. But, it is not useful to rest under the tree roofs at night. How the plantation of trees can be essential for a sustainable environment helps build remarkable procedures and is being discussed here. </p>

Microwave Studies of Electron Scattering by Isolated Interstitial Oxygen and Oxygen Complex in Silicon

1992 ◽  
Vol 31 (Part 1, No. 4) ◽  
pp. 957-964 ◽  
Author(s):  
Tyuzi Ohyama ◽  
Kohei Sugihara ◽  
Eizo Otsuka
Keyword(s):  
Electron Scattering ◽  
Interstitial Oxygen ◽  
Oxygen Complex

The mechanism of sulphide oxidation by Mortierellaisabellina NRRL 1757

1982 ◽  
Vol 60 (19) ◽  
pp. 2420-2425 ◽  
Author(s):  
Herbert L. Holland ◽  
Ian M. Carter
Keyword(s):  
Oxygen Atom ◽  
Electrophilic Attack ◽  
Sulphide Oxidation ◽  
Enzymic Oxidation ◽  
Oxygen Complex ◽  
Mechanism Of Oxidation

A series of aryl substituted phenyl and benzyl methyl sulphides has been oxidized to the corresponding sulphoxides by Mortierellaisabellina NRRL 1757. The oxygen atom introduced during this enzymic oxidation is derived from the atmosphere and not from water. The rates of oxidation have been determined by uv analysis, and correlated with the Hammett p sigma constants for the phenyl methyl sulphide series. The value of ρ = −0.67 so obtained is interpreted in terms of a mechanism of oxidation at sulphur involving an electrophilic attack on the sulphide sulphur by the enzymic activated iron–oxygen complex, followed by conversion of the resulting sulphur cation to sulphoxide.

scholarly journals The Fe–V Cofactor of Vanadium Nitrogenase Contains an Interstitial Carbon Atom

2015 ◽  
Vol 54 (45) ◽  
pp. 13249-13252 ◽  
Author(s):  
Julian A. Rees ◽  
Ragnar Bjornsson ◽  
Julia Schlesier ◽  
Daniel Sippel ◽  
Oliver Einsle ◽  
...  
Keyword(s):  
Carbon Atom ◽  
Interstitial Carbon ◽  
Vanadium Nitrogenase ◽  
Interstitial Carbon Atom
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