28 citations · 139 across the 10 of their papers we have counts for
10 papers
Magnetic and magnetoelectric properties of FeF ( = Ca, Sr) spin-chain compounds
N. V. Ter-Oganessian, S. A. Guda, V. P. Sakhnenko +1
Fluorides in general are characterized by big variety of crystal structures, whereas those containing transition metals also often show sizable magnetic properties. The tendency of…
Effect of pressure on the order-disorder phase transitions of -cations in O perovskites
N. V. Ter-Oganessian, V. P. Sakhnenko
Perovskite-like oxides O may experience different ordering degrees of -cations, that can be varied by suitable synthesis conditions or post-synthesis tre…
Multiferroic rust: magnetoelectric effect in göthite, -FeOOH
N. V. Ter-Oganessian, A. A. Guda, V. P. Sakhnenko
By means of symmetry analysis, density functional theory calculations, and Monte Carlo simulations we show that goethite, -FeOOH, is a linear magnetoelectric below its Néel temp…
Interpretation of magnetoelectric phase states using the praphase concept and exchange symmetry
N. V. Ter-Oganessian, V. P. Sakhnenko
The majority of magnetoelectric crystals show complex temperature-magnetic field or temperature-pressure phase diagrams with alternating antiferromagnetic incommensurate, magnetoel…
Magnetoelectric effect due to local noncentrosymmetry
V. P. Sakhnenko, N. V. Ter-Oganessian
Magnetoelectrics often possess ions located in noncentrosymmetric surroundings. Based on this fact we suggest a microscopic model of magnetoelectric interaction and show that the s…
Discrete Symmetry and Stability in Hamiltonian Dynamics
Tassos Bountis, George Chechin, Vladimir Sakhnenko
In this tutorial we address the existence and stability of periodic and quasiperiodic orbits in N degree of freedom Hamiltonian systems and their connection with discrete symmetrie…