Structural, optical and multiferroic properties of La+3-substituted M-type barium hexaferrite properties BaLaxFe12-xO19

In present research work, La+3 substitution in barium hexaferrite having formula BaLaxFe12-xO19 where x varies from 0.1 to 0.6 with the step size of 0.1 have been prepared using traditional solid-state method and sintered at 1100 degrees C for 2 h. The impact of La+3 ions on structural, morphological, optical, magnetic and ferroelectric properties of the samples have been investigated using X-ray diffractometer, Fourier transform infrared spectroscopy, scanning electron microscope, UV-Vis spectroscopy, Vibrating Sample Magnetometer and ferroelectric technique, respectively. The structural analysis revealed the formation of single-phase hexagonal structure. The surface morphology shows that the grains have definite boundary with some agglomeration. The value of band energy decreases as the concentration of La+3 ions increase in barium hexaferrite. The VSM data endorse the clear ferromagnetic M-H curve in which the value of coercivity and saturation magnetization have non-monotonic sequence. Ferroelectric analysis reveals that all samples except sample x = 0.1 have less polarizability which leads to these materials to be used in high-frequency applications.

Automated summary

The research investigated the impact of La+3 ions on the structural, morphological, optical, magnetic, and ferroelectric properties of barium hexaferrite samples. The study found that increasing La+3 ions led to a decrease in band energy and changes in magnetic properties, with lower polarizability in most samples suitable for high-frequency applications.