Open AccessGMR effect in nonhomogeneous magnetic field
Author(s) -
G. V. Babaitsev,
Н.Г. Чеченин,
I. O. Dzhun,
M. G. Kozin,
I. L. Romashkina
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1389/1/012145
Subject(s) - giant magnetoresistance , magnetic field , spin valve , magnetoresistance , ferromagnetism , condensed matter physics , actuator , physics , spin (aerodynamics) , materials science , electrical engineering , engineering , quantum mechanics , thermodynamics
Magnetic field sensors, based on giant magnetoresistance (GMR) effect, have a wide range of practical implementations. One of them is the use as a positioning device in different kind of actuators. Here we report on modelling of magnetoresistivity response of spin-valve (SV) based GMR structure in a various geometry of SV positioning with respect to a magnetic reference label. The model includes the magnetic label of a certain shape producing a nonhomogeneous magnetic field in 3D space and moving along a straight line in front of SV device. Different mutual label-SV positioning is considered. The reaction of micromagnetic configuration in the ferromagnetic layers and corresponding magnetoresistive effect of the SV is calculated and analyzed.