US 12,249,359 B2
Magnetic sensor, magnetic head, and magnetic recording device
Tazumi Nagasawa, Yokohama Kanagawa (JP); Satoshi Shirotori, Yokohama Kanagawa (JP); Akira Kikitsu, Yokohama Kanagawa (JP); and Yoshihiro Higashi, Komatsu Ishikawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Jul. 27, 2023, as Appl. No. 18/359,959.
Claims priority of application No. 2022-169281 (JP), filed on Oct. 21, 2022.
Prior Publication US 2024/0135967 A1, Apr. 25, 2024
Prior Publication US 2024/0233760 A9, Jul. 11, 2024
Int. Cl. G11B 5/39 (2006.01); G01R 33/07 (2006.01)
CPC G11B 5/3912 (2013.01) [G01R 33/07 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A magnetic sensor, comprising:
a first shield;
a second shield;
a third shield;
a fourth shield, a second direction from the third shield to the fourth shield crossing a first direction from the first shield to the second shield;
a first magnetic layer provided between the first shield and the second shield, the first magnetic layer being between the third shield and the fourth shield, the first magnetic layer including a first face and a second face, the first face being between the first shield and the second face;
a first conductive layer provided between the third shield and the first magnetic layer, the first conductive layer being non-magnetic;
a second conductive layer provided between the first magnetic layer and the fourth shield, the second conductive layer being non-magnetic;
a first intermediate layer provided between the first shield and the first magnetic layer, the first intermediate layer being non-magnetic and electrically conductive, the first intermediate layer including a first intermediate layer face facing the first face, an area of the first intermediate layer face being smaller than an area of the first face; and
a second intermediate layer provided between the first magnetic layer and the second shield, the second intermediate layer being non-magnetic and electrically conductive.