BaFe12O19 magnetoplumbite films grown on SiO2/Si substrates for widescale magnetic film semiconductor systems integration. (November 2020) - Kulik, Piotr
Abstract: Barium hexaferrite (i.e., BaFe12 O19 ) finds application in magnetic memory and radio frequency devices. Here, we report highly textured BaFe12 O19 magnetoplumbite thin film growth by pulsed laser deposition directly on amorphous thermal oxide wafers (i.e., SiO2 /Si) opening an avenue for the monolithic integration of ferrites onto silicon-based platforms compatible with semiconductor systems and processing. The films and, in particular, their interfaces have been characterized by vibration sample magnetometery, scanning and transmission electron microscopy, and energy dispersive x-ray spectroscopy. In the past, comparable hexaferrite films have been grown only on crystalline substrates with well-matched lattice parameters, e.g., sapphire or magnesium oxide. Graphical abstract: Image, graphical abstract