TY - JOUR AU - Kondovych, S. V. AU - Gomonay, H. V. AU - Loktev, V. M. PY - 2018/10/10 Y2 - 2024/03/28 TI - Magnetic Dynamics of a Multiferroic with an Antiferromagnetic Layer JF - Ukrainian Journal of Physics JA - Ukr. J. Phys. VL - 58 IS - 6 SE - Nanosystems DO - 10.15407/ujpe58.06.0586 UR - https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018329 SP - 586 AB - <p>Shape effects in magnetic particles are widely studied, because of the ability of the shape and the size to control the parameters of a sample during its production. Experiments with nano-sized samples show that the shape can affect also the properties of antiferromagnetic (AFM) materials. However, the theoretical interpretation of these effects is under discussion. A model to study the shape-induced effects in AFM particles at the AFM resonance frequency is proposed. The Lagrange function method is used to calculate the spectrum of resonance oscillations of the AFM vector in a synthetic multiferroic (piezoelectric + antiferromagnet). The influence of the specimen shape on the AFM resonance frequency in the presence of an external magnetic field is studied. Conditions for a resonance under the action of an external force or for a parametric resonance to arise in the magnetic subsystem are considered.</p> ER -