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Aug 31, 2022Open Access
The coexistence of long range magnetic order and superconductivity in the iron pnictide superconductor SmFeAsO1-xFx is the basis for the present study that analyses theoretically the role of multiple bands on the coexistence of superconductivity (SC) and antiferromagnetism (AFM). For this, a model Hamiltonian is developed and using Green’s function technique, expressions for TC, TM and magnetic order parameter η are obtained. For one band, two band and three band models separately, variation of ...
Jul 26, 2019Open Access
A polycrystalline orthorhombic compound of Li0.5Bi0.5Ti0.8Zr0.2O3 is synthesized by using a high temperature solid-state reaction technique at
high tem ...
Oct 27, 2014Open Access
The electrostatic and Born-Mayer repulsive
potentials method was used to calculate the higher order elastic constants and
pressure derivatives of alkaline-earth oxide CaO in a wide temperature range
(100 - 1000 K). The calculations have been made starting from primary physical
parameters viz. nearest-neighbour
distance and hardness parameter assuming long- and short- range potentials. The
different results of the calculations are compared with experimental data and
discussed.
Aug 26, 2014Open Access
Coordination
numbers have been calculated for the ordered structures prevailing in
aqueous sus- pension of macroions for its different governing parameters viz.
sizes, charges, impurity ion concentrations and temperatures by integration of
region r2g(r)
in the limit 0 - rmin around the main peak in g(r)-r curve in order to examine the effects
of controlling parameters on th ...
Aug 07, 2014Open Access
The aim
of the work has two folders: the first is to apply numerical and approximated
methods to solve the integral comparing in the thermoluminescence theory, i.e.  . The second point is to
compare the influence of the two different ways of calculation on the values of
the pre- exponential factor.
Jun 23, 2014Open Access
Zinc
oxide (ZnO) thin films have been deposited using a SILAR (Successive Ionic
Layer Adsorption and Reaction) technique, which is based on the alternate
dipping of substrate in the solution and distilled water. The thin films were
grown on copper, silicon and glass substrates. The precursors for ZnO films
were diluted aqueous solution ZnSO4 complexed with NH3.
The films were investigated by X-ray diffraction, scanning electron micr ...
Jun 23, 2014Open Access
A polyvinylpyrrolidone (PVP)/Ag
nanocomposite was prepared by reduction of silver nitrate in ethylene-glycol in
the presence of a polymeric protective agent (i.e., poly
(N-vinylpyrrolidone)). The size dependent color variation of this nanocolloid
is a clear indication of the presence of Ag as nanoparticles in the polymer
matrix. The nonlinear optical properties were studied by Z-scan technique in
which a Q-switched Nd: YAG laser with a pulse width ...
Jun 10, 2014Open Access
While correlating the various components of mechanical stress tensor due to elastic response with the corresponding components of electrically induced stress tensor pertaining to quadratic electrostriction, proper precautions are to be observed for higher order electromechanical coupling. Contributions from lateral stresses, electrical and mechanical boundary conditions are to be considered for the correct estimation of induced strain in elastic dielectrics. The knowledge of dependence of Maxwel...
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