Electrospun Nanofibers (1D) versus Co-precipitated Nanoparticles (0D) of BaFe12-xAlxO19: A Comparative Study of Nanostructure, Crystallinity, and Magnetic Properties
Year: 2026
Type: article
Abstract: Barium hexaferrite (BaFe 12 O 19 , BaM), a M-type hexaferrite, has been used in various applications due to its notable properties. Partial substitution of Fe 3 + ions with non-magnetic cations can alter BaM magnetic behavior by changing the intrinsic spin configuration of the ferrite lattice. This study investigates the impact of Al +3 substitution on the structural and magnetic properties of modified Al-BaM. A series of BaFe 12-x Al x O 19 samples (0.0 ≤ x ≤ 4.0) were synthesized in both nanoparticle and nanofiber morphologies using different fabrication routes derived from similar precursor sources. The highest coercivity value Hc (6005 Oe) was achieved for BaAl 4 Fe 8 O 19 nanoparticles, with low saturation magnetization Ms (37.39 emu/g). Within the Al-BaM nanofiber series, the highest coercivity Hc (4872 Oe) and lowest saturation magnetization Ms (10.43 emu/g) were achieved at concentration x = 3.5. In sum, the vibrating sample magnetometer (VSM) results showed that the occupancy of Al +3 non-magnetic ions instead of Fe +3 ions in the hosting matrix and the presence of impurities resulted in an explainable change in both coercivity (Hc) and saturation magnetization (Ms) values.
Source: Next Materials
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,280
OpenAlex ID: W7161170616