Magnetic sensor

• Main Authors: KUROKI KOJI, HARAKAWA OSAMU, KAMENO MAKOTO, ONODERA, IKUTO
• Format: Patent
• Language: Chinese; English
• Published: 12.08.2022
• Subjects: ELECTRICITY; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The technical problem to be solved by the present invention is to improve the magnetic bias applied to a magnetoresistive element by magnetically coupling a magnetoresistive band and a ferromagnetic film in a magnetic sensor including the magnetoresistive band and the ferromagnetic film. A magnetic sensor (1) is provided with: a reluctance band (S); an insulating film (13) that covers the reluctance tape (S); and ferromagnetic films (M1, M2) provided on the insulating film (13) and arranged in the x direction across a magnetic gap (G) extending in the y direction. The ferromagnetic films (M1, M2) overlap the plurality of hard magnetic bodies (H) with the insulating film (13) therebetween. As a result, since two adjacent hard magnetic bodies (H) are magnetically coupled via the ferromagnetic films (M1, M2), the magnetic bias applied to the magnetoresistive element (R) can be increased without increasing the size of the hard magnetic bodies (H). 本发明要解决的技术问题是，在包括磁阻带和铁磁性膜的磁传感器中，通过使磁阻带与铁磁性膜磁耦合，提高施加至磁阻元件的磁偏置。解决手段是，