Title :
SQUID microscope for magnetic structure visualization in magnetoimpedance elements
Author :
Gudoshnikov, Sergey A. ; Rudenchik, Pavel E. ; Matveets, Ludmila V. ; Snigirev, Oleg V. ; Liubimov, Boris Ya ; Perov, Nikolay S. ; Shina, Elena A Gan ; Antonov, Anatoly S. ; Achkov, Artur L D ; Sedova, Marina V.
Author_Institution :
Inst. of Terrestrial Magnetism Ionosphere & Radio Wave Propagation, Troitsk, Russia
fDate :
3/1/2001 12:00:00 AM
Abstract :
An attempt to apply a SQUID microscope for visualization of magnetic structure in giant magnetic impedance (GMI) elements was undertaken. The measurements were carried out on the 1×10-3 mm thick permalloy strip with the in-plane sizes 6 mm×0.3 mm. The topography of the vertical component of magnetic field was imaged with a high spatial resolution close to 30×10-3 mm over the central part of a sample. The images taken in the applied magnetic field varied over the range ±4 kA/m reveal the domain structure with anisotropy perpendicular to longitudinal sample axis
Keywords :
Permalloy; SQUIDs; ferromagnetic materials; giant magnetoresistance; magnetic domains; magnetic field measurement; magnetic structure; perpendicular magnetic anisotropy; scanning probe microscopy; Fe20Ni80; SQUID microscope; domain structure; ferromagnet; magnetic structure visualization; magnetoimpedance elements; permalloy strip; perpendicular anisotropy; vertical field component topography; Impedance; Magnetic anisotropy; Magnetic field measurement; Magnetic force microscopy; Perpendicular magnetic anisotropy; SQUIDs; Size measurement; Strips; Thickness measurement; Visualization;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
