Domain structure regularization in monocrystalline barium hexaferrite

• Опубліковано в: : Semiconductor Physics Quantum Electronics & Optoelectronics
• Дата: 2018
• Автори: Nikytenko, A.L., Kostenko, V.I., Grygoruk, V.I., Romaniuk, V.F.
• Формат: Стаття
• Мова: Англійська
• Опубліковано: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2018
• Теми: Hetero- and low-dimensional structures
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/215319
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Domain structure regularization in monocrystalline barium hexaferrite / A.L. Nikytenko, V.I. Kostenko, V.I. Grygoruk, V.F. Romaniuk // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2018. — Т. 21, № 4. — С. 402-406. — Бібліогр.: 13 назв. — англ.

Conditions for regular domain structure formation in a single-crystal barium hexaferrite plate have been studied experimentally. The purpose of the work was to develop a simple and, at the same time, effective method of regularizing the cylindrical domain structure in these plates. The cylindrical domain structure was created by the field method, and its visualization was carried out using the Faraday effect. Radiophysical method of microwave spectroscopy was used to study characteristics of the spectra of magnetostatic oscillations, which are uniquely related to the type and quality of the formed domain structure. The method of cylindrical domain structure regularization in single-crystal barium hexaferrite has been proposed, which is based on applying a constant fixed magnetic field along the easy magnetization axis. It has been ascertained that the optimal value of the regularization field lies within the range 3.3...3.6 kOe. However, with the fields exceeding 3.6 kOe, the cylindrical domain structure is significantly distorted. It was found that the proposed method allows increasing the intensity of the highest-frequency domain magnetostatic resonance by more than 4.5 dB.