Vol. 17, no. 4, 2025
РусскийEnglish
RADIOELECTRONICS
Measurements and Analysis of Ferromagnetic Resonance;s Orientation Dependencies
Andrey S. Fedorov, Viktor V. Demidov, Sergey A. Nikitov, Mikhail V. Logunov
Kotelnikov Institute of Radioengineering and Electronics of RAS, http://www.cplire.ru/
Moscow 125009, Russian Federation
Email: fedorov_a_s@inbox.ru, demidov@cplire.ru, nikitov@cplire.ru, logunov@cplire.ru
Received May 19, 2025, peer-reviewed May 26, 2025, accepted May 29, 2025, published August 14, 2025
Abstract: Magnetic materials exhibit a different component of anisotropy, which arise during synthesis or determined by the crystallographic properties of the material. For example, to calculate the parameters of uniaxial anisotropy in films with a known easy magnetization axis, it is sufficient to measure two ferromagnetic resonance (FMR) spectra − one with the external magnetic field applied along the uniaxial anisotropy axis and another perpendicular to it. In the case of combined anisotropy, more detailed information is required, such as orientation (angular) dependencies of FMR. This study presents the results of modification of the Bruker ER200 spectrometer to enhance the accuracy and enable automated detection of FMR orientation dependencies. An example of analyzing the FMR orientation dependence in an iron garnet film with combined anisotropy is provided.
Keywords: ferromagnetic resonance, uniaxial magnetic anisotropy, cubic magnetic anisotropy, iron garnet, enhancement of accuracy and automation of FMR orientation dependence measurements
UDC 537.635
RENSIT, 2025, 17(4):403-408e DOI: 10.17725/j.rensit.2025.17.403
Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/689/17(4)403-408e.pdf