HIGH PRESSURE ELECTRICAL RESISTIVITY STUDY ON ORTHORHOMBIC SnTe1−xSx

1996 ◽  
Vol 10 (10) ◽  
pp. 459-465
Author(s):  
S. ARIPONNAMMAL ◽  
S. NATARAJAN
Keyword(s):  
High Pressure ◽  
Electrical Resistivity ◽  
Lattice Parameter ◽  
Layered Material ◽  
Parameter Study ◽  
X Ray ◽  
Resistivity Measurements ◽  
Resistivity Study ◽  
Sulphur Concentration ◽  
Electrical Resistivity Study

Electrical resistivity measurements under pressure and lattice parameter study on SnTe 1–xSx(0.5≤x≤1) are reported here. The structure of these samples is confirmed by the theoretical calculation of X ray intensities using Lazy-Pulverix programme. The electrical resistivity decreases with the increase of pressure and also with the decrease of sulphur concentration. High pressure electrical resistivity study has produced more evidence that the compounds are layered material.

HIGH PRESSURE ELECTRICAL RESISTIVITY STUDY ON NONLINEAR SINGLE CRYSTAL ZINC THIOUREA CHLORIDE

2007 ◽  
Vol 21 (11) ◽  
pp. 675-678 ◽  
Author(s):  
S. ARIPONNAMMAL ◽  
R. SELVA VENNILA ◽  
S. RADHIKA ◽  
P. M. USHASREE
Keyword(s):  
High Pressure ◽  
Electrical Resistivity ◽  
Single Crystal ◽  
Powder Diffraction ◽  
Slow Evaporation ◽  
X Ray ◽  
Resistivity Study ◽  
Slow Evaporation Technique ◽  
Evaporation Technique ◽  
Electrical Resistivity Study

Zinc thiourea chloride (ZTC) crystals were crystallized by slow evaporation technique. The lattice parameters of the grown crystals were determined by angle dispersive X-ray powder diffraction technique (XRD) and the structure was confirmed. High pressure electrical resistivity study was carried out on this crystal and the results are reported here.

High Pressure Electrical Resistivity Study of Sm0.85Nd0.15Se

1997 ◽  
Vol 11 (26n27) ◽  
pp. 1189-1192 ◽  
Author(s):  
S. Ariponnammal ◽  
S. Natarajan
Keyword(s):  
Electrical Resistivity ◽  
Rare Earth ◽  
Lattice Parameter ◽  
Parameter Study ◽  
Rare Earth Ion ◽  
Resistivity Measurements ◽  
Divalent State ◽  
Trivalent State ◽  
Trivalent Rare Earth ◽  
Electrical Resistivity Study

The study of rare-earth monochalcogenides have received much attention because of their interesting electrical properties. They crystallize in the NaCl type structure and are semiconducting if the rare earth ion is in the divalent state and metalic if trivalent state. The effect of substitution of trivalent rare earth ion in divalent rare earth has been studied. We present the results of electrical resistivity measurements and lattice parameter study on Sm0.85Nd0.15Se . The structure of the sample is confirmed by the theoretical calculation of X-ray intensities using Lazy-Pulverix programme. The electrical resistivity is found to be decreasing with the increase of pressure.

High pressure electrical resistivity study on cubic SnTe1−xSex

1996 ◽  
Vol 197 (1) ◽  
pp. K1-K4 ◽  
Author(s):  
S. Ariponnammal ◽  
C. Venkateswaran ◽  
S. Natarajan
Keyword(s):  
High Pressure ◽  
Electrical Resistivity ◽  
Resistivity Study ◽  
Electrical Resistivity Study

HIGH PRESSURE-HIGH TEMPERATURE ELECTRICAL RESISTIVITY STUDIES ON Nd0.9Ca0.1Ba2Cu3O7-δ

2006 ◽  
Vol 20 (29) ◽  
pp. 4885-4890
Author(s):  
R. SELVA VENNILA ◽  
S. REZA GHORBANI ◽  
N. VICTOR JAYA
Keyword(s):  
High Pressure ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Bulk Modulus ◽  
Structural Changes ◽  
X Ray Diffraction ◽  
Heating Coil ◽  
X Ray ◽  
High Pressure High Temperature ◽  
Electrical Resistivity Study

High pressure-high temperature electrical resistivity study on composition-controlled Nd 0.9 Ca 0.1 Ba 2 Cu 3 O 7-δ high T c superconductor (HTSC) is carried out by a four-probe technique using Bridgman anvils. A simple heating coil arrangement is used for heating the samples. Electrical resistivity behavior under pressure (up to a maximum of 8 GPa) at various temperatures (up to a maximum of 523 K) were studied and reported in this paper. Simulation of energy dispersive X-ray diffraction confirms substitution of calcium at the Nd site of Nd -123. Variation of the electrical resistivity under pressure is compared with that of the structural changes and the bulk modulus was determined.

EFFECT OF γ RADIATION ON SOME PHYSICAL PROPERTIES OF THE SPINEL FERRITE SYSTEM Ni0.65Zn0.35CuxFe2−xO4

1994 ◽  
Vol 08 (28) ◽  
pp. 1781-1790 ◽  
Author(s):  
F.S. TERRA
Keyword(s):  
Electrical Resistivity ◽  
Room Temperature ◽  
Spinel Ferrite ◽  
Lattice Parameter ◽  
X Ray Diffraction ◽  
Γ Radiation ◽  
X Ray ◽  
Resistivity Measurements ◽  
Dta Analysis ◽  
Ferrite System

X-ray diffraction analysis, electrical resistivity measurements at room temperature, and differential thermal analysis (DTA) were carried out for γ-irradiated Ni 0.65 Zn 0.35 Cu xFe2−x O 4 spinel ferrite samples. It was found that the lattice parameter decreased, i.e. the theoretical density increased, while the electrical resistivity decreased. From the DTA analysis there is an endothermic peak at 100–130º C due to internal stress created by γ radiations as a result of lattice defects formation.

High pressure electrical resistivity study on itinerant ferromagnetic -

2008 ◽  
Vol 403 (5-9) ◽  
pp. 1375-1377 ◽  
Author(s):  
V.H. Tran ◽  
R.T. Khan ◽  
E. Bauer ◽  
P. Rogl
Keyword(s):  
High Pressure ◽  
Electrical Resistivity ◽  
Resistivity Study ◽  
Electrical Resistivity Study
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