scholarly journals Physicochemical, electrical and optical studies of methyl-3-(2-furylmethylidene) carbazate single crystal

2015 ◽  
Vol 38 (5) ◽  
pp. 1411-1417
Author(s):  
G GOMATHI ◽  
R GOPALAKRISHNAN
Keyword(s):  
Single Crystal ◽  
Optical Studies

Non linear optical studies on semiorganic single crystal: L-arginine 4-nitrophenalate 4-nitrophenol dihydrate (LAPP)

2017 ◽  
Vol 92 ◽  
pp. 168-172 ◽  
Author(s):  
M. Mahadevan ◽  
P.K. Sankar ◽  
G. Vinitha ◽  
M. Arivanandhan ◽  
K. Ramachandran ◽  
...  
Keyword(s):  
Single Crystal ◽  
Optical Studies ◽  
Non Linear ◽  
Linear Optical

Synthesis, growth, optical, thermal and nonlinear optical studies of dimethylammonium picrate single crystal

Optik ◽  
2016 ◽  
Vol 127 (1) ◽  
pp. 383-386 ◽  
Author(s):  
K. Syed Suresh Babu ◽  
G. Peramaiyan ◽  
M. NizamMohideen ◽  
M. Dhavamurthy ◽  
R. Mohan
Keyword(s):  
Single Crystal ◽  
Nonlinear Optical ◽  
Optical Studies

A study on structural, optical, thermal and electrical properties of the amaranth dye-doped KHOOD single crystal

2019 ◽  
Vol 34 (04) ◽  
pp. 2050002 ◽  
Author(s):  
K. Mahendra ◽  
N. K. Udayashankar
Keyword(s):  
Single Crystal ◽  
Crystal Surface ◽  
Photon Absorption ◽  
Structural Studies ◽  
Dye Molecules ◽  
Optical Studies ◽  
Distribution Of Elements ◽  
Potassium Hydrogen ◽  
Thermal And Electrical Properties ◽  
Dye Molecule

Influence of amaranth dye on the potassium hydrogen oxalate oxalic acid dihydrate (KHOOD) single crystal is investigated. The structural studies were carried out to understand the crystal behavior after dye incorporation. Optical studies were performed to investigate the photon absorption of the crystal with or without the presence of dye molecule. The absorption of pure crystals were also compared with that of amaranth dye-doped crystals and the bandgap was estimated. The surface morphology and the presence of dye molecules are investigated using scanning electron microscope (SEM) and EDX analysis. The elemental mapping was carried out to understand the distribution of elements in the crystal surface. The thermal behavior of the crystal was studied and compared with that of KHOOD and dye-doped KHOOD crystals in detail. The emission properties of the crystals were studied and compared crystal. Field-dependent [Formula: see text]–[Formula: see text] studies were performed to study the conductivity of the crystals and results were discussed in detail.

A Study of Weathering in a Soil Derived from a Biotite-Hornblende Rock

Clay Minerals ◽  
1970 ◽  
Vol 8 (4) ◽  
pp. 435-444 ◽  
Author(s):  
M. J. Wilson ◽  
V. C. Farmer
Keyword(s):  
Single Crystal ◽  
Clay Mineral ◽  
Minor Phase ◽  
Optical Studies ◽  
Thermal Methods ◽  
X Ray

AbstractThe weathering of hornblende in the Rehiran profile has been investigated by optical, X-ray, infrared and differential thermal methods. Optical studies of the fresh hornblende show that it contains discrete lamellar intergrowths of another amphibole which, from infrared evidence, is of an iron-rich nature. This minor phase is selectively weathered in the lower horizons and yields a clay mineral which was identified as interstratified swelling chlorite-saponite. The major hornblende component remains relatively unchanged. Single crystal photographs indicate that the formation of the clay mineral is not structurally controlled by the parent hornblende, although there is a tendency towards alignment along cleavage planes. The clay mineral becomes unstable in the upper part of the profile and could not be detected in the A horizon. Comparisons are made with the findings of other workers.

Optical studies of (NH4)2SO4 single crystal in the paraelectric phase

2003 ◽  
Vol 64 (11) ◽  
pp. 2141-2146 ◽  
Author(s):  
A. El-Korashy ◽  
H. El-Zahed ◽  
M. Radwan
Keyword(s):  
Single Crystal ◽  
Paraelectric Phase ◽  
Optical Studies

Hybrid crystal formation in thermal transformations of potassium nitrite

1965 ◽  
Vol 285 (1402) ◽  
pp. 360-369 ◽  
Keyword(s):  
Control System ◽  
Single Crystal ◽  
Thermal Transformation ◽  
Crystal Formation ◽  
Monoclinic Structure ◽  
Thermal Transformations ◽  
X Ray Diffraction ◽  
Optical Studies ◽  
X Ray ◽  
Potassium Nitrite

A microthermostat design for single crystal studies is described which gives control of specimen temperature in the range 30 to 100°C to an accuracy of ± 0.1 degC. For X-ray diffraction experiments the furnace comprises a beryllium tube chamber. For optical studies, the control system is combined with a chamber suitable for mounting on the stage of a polarizing microscope. Temperature cycles with single crystals of potassium nitrite indicate that the thermal transformation around 40°C from a monoclinic structure to one which is probably cubic, is continuous and reversible. Hysteresis is found in the transformation; high- and low-temperature structures co-exist in a hybrid single crystal over a temperature range.

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