We propose the formation mechanism of the body-centred regular tetrahedral structure of the He+5 cluster. The total energy curve for this structure has been cal
The demagnetization curves of nanocomposite magnets have been calculated using a one-dimensional model. The results are in agreement with experimental results.
Molybdenum ions are implanted into aluminium with high ion flux and high dose at elevated temperatures of200℃, 400℃ and 500℃. Due to the high temperature and
The dynamical symmetries and adjoint symmetries of nonlinear nonholonomic constrained mechanical systems are analysed in two kinds of geometrical frameworks who
It is shown that the existence of incoherently coupled screening-photovoltaic soliton families is possible in biasedphotovoltaic photorefractive crystals under
The properties of the ground state in the spin-2 transverse Ising model with the presence of a crystal field arestudied by using the effective-field theory with
Two optical set-ups to implement wavelet transform with a single lens have been proposed, in which the wavelet filter was placed in front of the imaging lens or
A universal theory of steady-state one-dimensional photorefractive spatial solitons is developed which applies to the steady-state one-dimensional photorefracti
We demonstrate a new kind of instability of the exteal cavity semiconductor laser. In some parameter regimes,the exteal cavity system will produce short and str