VNU Journal of Science: Mathematics - Physics
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The electric, magnetic and magnetocaloric properties of perovskite
VNU Journal of Science: Mathematics - Physics - Tập 20 Số 3AP - 2017
Abstracts
Predict optical properties of Dy3+ ions doped double potassium gadolinium fluoride crystal from absorption spectra
VNU Journal of Science: Mathematics - Physics - Tập 28 Số 2 - 2012
Abstract. Double potassium gadolinium fluoride crystal doped with 5.0 mol % of
Dy3+ ions (K2GdF5:Dy3+) was synthesized under hydrothermal condition. The
absorption, luminescence spectra and lifetime of K2GdF5:Dy3+ sample were
measured at room temperature. Judd – Ofelt (JO) theory is used to study the
spectral properties and to calculate the radiative transition probabilities. The
prediced branchin...
On the stability of elastoplastic thin triangular plates made in compressible material
VNU Journal of Science: Mathematics - Physics - Tập 21 Số 4 - 2005
Abstract
Heoretical approach to singl e - mode operation of bistable fabry - perot laser containing saturable absorber
VNU Journal of Science: Mathematics - Physics - Tập 18 Số 1 - 2002
Abstract
Mechanical and Thermophysical Properties of Neptunium Monopnictides
VNU Journal of Science: Mathematics - Physics - Tập 32 Số 2 - 2016
Abstract: The temperature dependent ultrasonic parameters like ultrasonic
attenuation, acoustic coupling constant, ultrasonic Grüneisen parameter and
ultrasonic velocity at room temperature have been computed for neptunium
monopnictides (NpX, where X=N, P, As, Sb). For the evaluation of ultrasonic
parameters, the higher order elastic constants have been found out using Coulomb
and Born-Mayer poten...
Epitaxial-like Growth of Solution-processed PbZr0.4Ti0.6O3 Thin Film on Single-crystal Nb-doped SrTiO3 Substrate
VNU Journal of Science: Mathematics - Physics - Tập 33 Số 4 - 2017
PbZr0.4Ti0.6O3 (PZT) thin films have been conventionally fabricated on
traditional silicon substrates with a platinum bottom electrode; however, as a
consequence of unit cell mismatch, the films are difficult to form as an
epitaxial-like growth. Hence, PZT films deposited on single-crystal niobium
doped SrTiO3(111) substrates (Nb:STO) are promising to solve this issue thanks
to the similar perovsk...
Preliminary Study on Alternative Reflectors for LOTUS Reactor
VNU Journal of Science: Mathematics - Physics - Tập 39 Số 2 - 2023
LOTUS reactor - a compact lead-cooled fast reactor is currently being studied to
generate 200 MWth of capacity and operate for 20 years without refueling for the
floating nuclear power plant (FNPP) application. Therefore, it would be a big
advantage to achieve a long operation without refueling. However, a small
reactor usually has a higher neutron leakage, and a good neutron reflector is
essentia...
On the Perron Effect for Exponential Stability of Differential Systems on Time Scales
VNU Journal of Science: Mathematics - Physics - Tập 33 Số 4 - 2017
In 2007, N. H. Du and L. H. Tien [1] shown that the exponential stability of the
linear equation on time scales implies the exponential stability of the suitable
small enough Lipchitz perturbed equation. In this paper, we shall prove that if
the perturbation is arbitrary small order 1 then the above argument is not true
which is called Perron effect.
Influences of pH Values on Magnetic CoNiP Nanowires Fabrication
VNU Journal of Science: Mathematics - Physics - Tập 30 Số 2 - 2014
Abstract: CoNiP nanowire arrays were fabricated by electrodeposition method into
polycarbonate (PC) templates at different pH values. It is obvious that the
crystal structure of the CoNiP nanowires depends on the pH values of
electrolyte. The XRD results show that crystal structure of the CoNiP nanowires
is hcp structure and the intensity of the hcp (002) increased enhances as
solution pH=3.5. Mag...
Quantum kinetic equation in the quantum hadrondynamics (QHD-I) model
VNU Journal of Science: Mathematics - Physics - Tập 24 Số 3 - 2008
Abstract
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