PROBLEM TO BE SOLVED: To provide a sensor capable of improving sensitivity and an electronic apparatus.SOLUTION: According to an embodiment, a sensor includes a first sensor part, a first laminate, and a membrane part. The first sensor part includes a first magnetic layer, a second magnetic layer, and a first intermediate layer provided between the first magnetic layer and the second magnetic layer. The first laminate includes a third magnetic layer, a fourth magnetic layer, and a second intermediate layer provided between the third magnetic layer and the fourth magnetic layer. The membrane part is deformable. A part of the membrane part is arranged between the first sensor part and the first laminate.SELECTED DRAWING: Figure 1【課題】感度を向上できるセンサ及び電子機器を提供する。【解決手段】実施形態によれば、センサは、第１センサ部と、第１積層体と、膜部と、を含む。前記第１センサ部は、第１磁性層と、第２磁性層と、前記第１磁性層と前記第２磁性層との間に設けられた第１中間層と、を含む。前記第１積層体は、第３磁性層と、第４磁性層と、前記第３磁性層と前記第４磁性層との間に設けられた第２中間層と、を含む。前記膜部は、変形可能である。前記膜部の一部は、前記第１センサ部と前記第１積層体との間に配置される。【選択図】図１
