Open AccessМагнитный импеданс пленочных наноструктур для оценки полей рассеяния микрочастиц магнитных композитов
Author(s) -
Г.Ю. Мельников,
В.Н. Лепаловский,
Г.В. Курляндская
Publication year - 2022
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2022.02.52024.259-21
Subject(s) - materials science , composite number , demagnetizing field , remanence , magnetic field , nuclear magnetic resonance , perpendicular , composite material , magnetization , physics , geometry , mathematics , quantum mechanics
Longitudinal giant magnetoimpedance effect of [Fe21Ni79/Cu]5/Cu/[Fe21Ni79/Cu]5 film element was investigated depends on stray magnetic field of epoxy magnetic composite with 30 % weight concentration of iron oxide magnetic microparticles. Configuration of an experiment was a model of thrombus detection in a blood vessel. Stray magnetic field was varied by movement of a magnetic composite above the element perpendicular to the long side. Composite was either magnetized or not to the state of remanence. As the magnetic composite approaches the GMI element, MI ratio curves are smoothed and shifted along the field axis and maximum value of the MI ratio decreases. Magnetic properties of magnetic composite and film element were investigated as well.