TITLE:
Structural, Magnetic, and Microwave Absorption Properties of Al3+ Doped Low-Sintered BaFe12O19 Hexaferrite
AUTHORS:
Yaseen Mohd, Deepika Sharma, Rohit Duglet, Vijay Singh, Sonia Khan, Mahavir Singh, Indu Sharma
KEYWORDS:
M-Type Ferrite, Magnetic Properties, Permanent Magnet, EM Properties, mW Absorption
JOURNAL NAME:
World Journal of Condensed Matter Physics,
Vol.16 No.4,
September
23,
2026
ABSTRACT: Hexaferrite materials emerge as multifunctional materials with effective magnetic and microwave absorption properties, which contribute to modern electrical mobility and radar applications. In this work, we present a comprehensive analysis of the BaFe12-xAlxO19 (x = 0.00, 0.02, 0.04, 0.06, and 0.08) series, synthesized via the citrate precursor route. Structural and Fourier transform infrared (FTIR) analysis established the M-type hexagonal phase for all studied compounds. Magnetic results reveal the hard ferromagnetic nature of the investigated compounds. In addition, crystallographic parameters, metal-oxygen stretching, bending vibrations, and magnetic characteristic parameters were also tuned with the doping concentration. Besides, microwave absorption behavior in terms of complex permittivity and permeability across different target bands is also examined. The result divulges the synergistic effects of dielectric/magnetic loss and strong electromagnetic attenuation, enabling efficient microwave absorption/reflection loss, a wide effective absorption bandwidth, and a thin matching thickness. The reported results demonstrate that tuning the nonmagnetic Al3+ doping in M-type hexaferrites provides an effective avenue to alter the magnetic and microwave absorption properties, suggesting its potential in communication technology.