Magnetooptical investigation of the micromagnetic structure and magnetization processes in Co69Fe4Si12B15 amorphous microwires

The effect of domain-walls motion on second harmonic amplitude of magnetoinductive response in Co-based amorphous wires

“…In accordance with this model, a Co-based amorphous wire has an inner core with the longitudinal easy magnetization axis and an outer shell with the circular or helical anisotropy. In a weak longitudinal external magnetic field, the outer shell can have a metastable specific domain structure consisting of the domains with alternating signs of the circular component of the magnetization vector (so called bamboo domain structure) [16][17][18][21][22][23]. Further, we ignore the contribution to the voltage signal from the inner core with longitudinal anisotropy and assume that the wire has a helical anisotropy, and the anisotropy axis in the whole sample makes a constant angle c with the circular direction.…”

Specific features of magnetic properties of “thick” microwires produced by the Ulitovsky-Taylor method

“…The near sur face magnetic characteristics of the ribbons were mea sured by the magneto optical micromagnetometer described in [20]. The magneto optical Kerr effect is known to be sensitive to the magnetization of the near surface layer of a certain thickness corresponding to the light penetration depth into the medium t pen .…”

MAGNETIC PROPERTIES OF Co/Si/Co THIN-FILM SYSTEMS

“…The magnetic characteristics of Co/Si/Co trilayers were determined on a magnetooptical magnetometer [22] using the equatorial Kerr effect. The hysteresis loops were measured for two orientations of external magnetic field H in the plane of the structure, whereby the field was either parallel (D1 direction) or perpen dicular (D2 direction) to the direction of the field (H sub = 250 Oe) that was applied (parallel to the sub strate surface) during the deposition of films.…”