Abstract: A magnetic sensor element includes a pinned layer, a first non-magnetic layer, a first magnetic layer, and a free layer. The pinned layer has a fixed magnetization direction. The first non-magnetic layer is laminated on the pinned layer. The first magnetic layer holds the first non-magnetic layer with the pinned layer. The free layer is disposed along a lamination direction in which the first non-magnetic layer is laminated on the pinned layer. Each of the first magnetic layer and the free layer has a magnetization direction more easily changed by an external magnetic field than that of the pinned layer. The pinned layer and the first magnetic layer are coupled by indirect exchange interaction.

Abstract: A magnetic sensor capable of preventing degradation of magnetic measurement accuracy is obtained. The magnetic sensor includes a first sensor portion, a second sensor portion, and a connection portion. The first sensor portion extends in a first direction. The second sensor portion is disposed at an interval from the first sensor portion in a second direction orthogonal to the first direction. The first sensor portion includes a first end and a second end that are ends in the first direction. The second sensor portion includes a third end and a fourth end that are ends in the first direction. The connection portion connects the second end and the third end. The first sensor portion, the second sensor portion, and the connection portion are constituted of a multilayer body of a magnetic sensor element and a magnet. The magnet applies a bias magnetic field to the magnetic sensor element.