Magnetic sensor, magnetic head, and magnetic recording device

A magnetic sensor, comprising:

• a first shield;
• a second shield;
• a third shield provided between the first shield and the second shield;
• a fourth shield provided between the first shield and the second 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 fifth shield provided between the third shield and the second shield;
• a sixth shield provided between the fourth shield and the second shield, a direction from the fifth shield to the sixth shield being along the second direction;
• 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 in the second direction;
• a second magnetic layer provided between the first magnetic layer and the second shield, the second magnetic layer being between the fifth shield and the sixth shield in the second direction, the second magnetic layer being electrically connected to the fifth shield and the sixth shield, the second magnetic layer being antiferromagnetically coupled with the first magnetic layer;
• a first member including a first region and a second region, the first region being provided between the third shield and the first magnetic layer, the second region being provided between the first magnetic layer and the fourth shield;
• a first terminal electrically connected to the fifth shield;
• a second terminal electrically connected to the sixth shield;
• a third terminal electrically connected to the first magnetic layer;
• and
• a fourth terminal electrically connected to the second magnetic layer.