Abstract:
In this work, Sr0.3Ba0.4Pb0.3Fe12O19/(CuFe2O4)x (x = 2, 3, 4, and 5) as strongly exchange-coupled
nanosized ferrites were fabricated using a one-pot sol–gel combustion method (citrate sol-gel method).
The X-ray diffraction (XRD) powder patterns of the products confirmed the occurrence of pure,
exchange-coupled ferrites. Frequency dependencies of the microwave characteristics (MW) were
investigated using a co-axial method. The non-linear behavior of the MW with the composition
transformation may be due to different degrees of Fe ion oxidation on the spinel/hexaferrite grain
boundaries and strong exchange coupling during the hard and soft phases.
