Patent ID: 8879215

Claim:
A magnetoresistance effect element, comprising: a first shield; a second shield separated from the first shield in a first direction; a stacked unit including a first magnetic layer provided between the first shield and the second shield, a magnetization of the first magnetic layer being changeable, a second magnetic layer provided between the first magnetic layer and the second shield, a magnetization of the second magnetic layer being changeable, and an intermediate layer provided between the first magnetic layer and the second magnetic layer; and a hard bias unit provided between the first shield and the second shield to be arranged with the stacked unit in a second direction intersecting the first direction, a crystal orientation plane of the first magnetic layer in a film surface perpendicular direction being a cubic (110) plane, the first magnetic layer including a first stacked body including a first Fe layer and a first Co layer stacked with the first Fe layer along the first direction, and a first Heusler alloy layer stacked with the first stacked body along the first direction, a thickness of the first Fe layer being not less than 0.3 nanometers and not more than 0.6 nanometers, a thickness of the first Co layer being not less than 0.3 nanometers and not more than 0.6 nanometers.