Tailored Magnetic and Electric States in 3d-Metal-Insulator Films: Characterization and Applications

Abstract

Progress in designing of new low-cost magnetoelectronic planar devices requires new arti cial lms combining tuneable magnetic and electric properties. In this context, metal insulator lms are prospective for synthesis of materials with tailored physical properties that could be controlled with lms composition and synthesis regimes. Present overview covers the summary of recent experimental results on complimentary and systematic study of macroscopic and local magnetic properties of lms using vibrating sample magnetometer and Mossbauer spectroscopy with respect to phase composition and structural analysis at nanoscale by X-ray absorption spectroscopy in the extended X-ray absorption ne structure range, transmission electron microscopy and high-resolution transmission electron microscopy. Speci c relationship between lms structure and resulting magnetic properties (SP relaxation, core-shell exchange interaction, perpendicular magnetic anisotropy) is considered. E ects of magnetic and electric percolation in lms are discussed in correlation with synthesis regimes (atmosphere of deposition, temperature of the substrate) and lms composition. Physical mechanisms and models describing magnetic and electric properties of composite lms are analyzed. Finally, technological approaches are proposed for tuning lms properties towards their desired combination with respect to application in designing of sensors and planar (non-coil) inductive elements.