Radio-absorbing properties of (1-x)BiFeO₃ – xLaMnO₃ (0.1 ≤ x ≤ 0.9) solid solutions

Abstract

In the frequency range of 3.2–12 GHz, the microwave energy absorption spectra of a series of the (1-x)BiFeO₃ – xLaMnO₃ solid solutions with a concentration of x = 0.1 − 0.9 were studied. The spectra contain the absorption maxima of the resonant type, the magnitudes, resonant frequencies, and number of which depend on the x concentration and temperature. At different heights from the surface of the samples under study, located on the microstrip line, the emission spectra of the electric and magnetic components of the microwave field were obtained. The X-ray diffraction data and the obtained absorption and emission spectra are interconnected and complement each other. The features of the spectra are discussed from the point of view of the contribution to the emission and absorption of the energy of the dielectric walls of the twins resonating in the electromagnetic field. The features of the magnetic moments of multiferroics are also discussed.

Keywords:

• Multiferroic
• solid solutions
• microstrip line (MSL)
• absorption
• radio emission
• oscillators

Additional information

Funding

The work was supported by the Ministry of Science and Higher Education of the Russian Federation; the state task in the field of scientific activity No. FENW-2022-0001.