Correlation Between Composition and Electrodynamics Properties in Nanocomposites Based on Hard/Soft Ferrimagnetics with Strong Exchange Coupling
oleh: Munirah Abdullah Almessiere, Alex V. Trukhanov, Yassine Slimani, K.Y. You, Sergei V. Trukhanov, Ekaterina L. Trukhanova, F. Esa, A. Sadaqat, K. Chaudhary, Maxim Zdorovets, Abdulhadi Baykal
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2019-02-01 |
Deskripsi
In this work, Sr<sub>0.3</sub>Ba<sub>0.4</sub>Pb<sub>0.3</sub>Fe<sub>12</sub>O<sub>19</sub>/(CuFe<sub>2</sub>O<sub>4</sub>)<sub>x</sub> (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.