Microwave Absorbing Properties of Modified Solid Solutions Based on Bismuth Ferrite and Lead Ferroniobate with Different Degrees of Porosity

In this paper, the microwave absorbing and resonance properties of solid solutions based on BiFeO3 and Pb(Fe0.5Nb0.5)O3 and PbTiO3 modified with GeO2 are studied. The choice of these systemsSystems is justified by the high microwave absorbing propertiesMicrowave absorbing properties of the components separately and the prospects for their applications in microwave technology. A method for studying cylindrical material samples on a microstrip line using a networkNetwork analyzer is briefly described. The measurements were carried out in the frequency range of 300–26.5 GHz. Studies have shown that with an increase in the porosity of the material, its microwave absorbing propertiesMicrowave absorbing properties increase, while the resonant characteristics, presumably, worsen. Materials with a low content of bismuth ferriteBismuth ferrite (BFO) have the best microwave absorbing propertiesMicrowave absorbing properties. The results obtained will help in the development of materials with controlled microwave absorbing propertiesMicrowave absorbing properties for applications as microwave absorbing coatings, microwave substrates, resonator and filter materials.