Significant ferrimagnetism observed in Aurivillius $Bi4Ti3O12$ doped by antiferromagnetic $LaFeO3$ Available to Purchase

Highly crystalline quality $c$-axis epitaxial $nLaFeO3–Bi4Ti3O12$ $(n=0.5,1.0,1.5)$ thin films were deposited on $SrTiO3$ (001) substrates by pulsed laser deposition. The x-ray diffraction and transmission electron microscopy characterizations confirm that there are designed even-odd number perovskite-block structures in $n=0.5$ and 1.5 films while it has even-even number ones in $n=1.0$ films. The remarkable physical property of $n=0.5$ and 1.5 samples is the presence of ferrimagnetism even up to room temperature. While it is antiferromagentic property in $n=1.0$ sample. The observed ferrimagentism is explained qualitatively by considering the crystal structure in $nLaFeO3–Bi4Ti3O12$⁠.