Results: **3**

#### Hysteresis **loops** for a bulk ferromagnetic by Heisenberg model

... such as exchange integral, number of closest neighbours and temperature. In a special range of the parameters a transition from unique solution of the resulting Heisenberg equation to multi-valued is observed. For this case exemplary hysteresis **loops** are built. The expression for Curie temperature allows to evaluate the exchange integral and proceed into temperature range above the critical temperature.
Leble S. B., Chychkalo A. Yu.
hysteresis **loop**, ferromagnetism, paramagnetism, Curie ...

#### Improving the design of low-frequency transmitting antenna systems

..., 2005.
5. Виниченко А. И. Теория тракта распространения радиоволн линий радиосвязи. Л., 1984.
Burmistrov V. I., Ponimatkin V. E., Karpinskaya T. A., Goglev V. A., Kuzmichev S. A.
**loop** antenna, polarization of radiation, ferrite magnetic circuit, electric vector, magnetic permeability, radiated power
50-56

#### Model evaluation of the directed properties of rectangular **loops**

Model evaluation of the directed properties of rectangular **loops** with different form coefficient is carried out on the basis of theoretical approach, developed by authors. Comparison of the received results with known experimental values of the studied parameters for Pistolkors’s loopback vibrator is carried ...