Magnetic interaction between soft and hard ferrimagnetic phases in BaFe12O19 + CuFe2O4 composite

Magnetic behavior of BaFe12O19+(x)CuFe2O4 (with x = 1, 2, and 4) has been explored. These composites were prepared by the standard sol-gel route. X-ray diffraction, Field Emission Scanning Electron Microscopy, and Transmission Electron Microscopy techniques were employed to characterize the composites. The magnetic interaction between CuFe2O4 BaFe12O19 M-H hysteresis loops by employing the Vibrating Sample Magnetometer technique. The role of copper ferrite in the BaFe12O19+CuFe2O4 BaFe12O19+CuFe2O4 (i.e. x =1) composite shows the maximum magnetic parameters (M (s) , H (c) , and (BH)(max)) among all the composite samples under study. Hence, this composition has been investigated extensively by annealing at different temperatures to optimize its magnetic properties. The BaFe12O19 CuFe2O4 (BH)(max) and saturation magnetization (M (s) ). The magnetic interaction between two different magnetic phases in the composite has been explored by using the Henkel plot study with the help of isothermal remanent magnetization (IRM) and direct current demagnetization (DCD) M-H curves. The exchange coupling between soft and hard magnetic phases in the composite is also examined by the derivative of magnetization with the magnetic field.

Automated summary

The magnetic behavior of BaFe12O19+(x)CuFe2O4 composites has been investigated. CuFe2O4 was found to contribute the largest magnetic parameters in the composites. The magnetic properties of the composites were optimized by annealing treatment. The exchange coupling between two different magnetic phases in the composites was also studied.