SYSTEM AND METHODS FOR MAGNETIC TUNNEL JUNCTION PRESSURE SENSORS

摘要

System and methods for magnetic Tunnel Junction pressure sensors are provided. In at least one implementation, a pressure sensor device comprises a magnetic tunnel junction comprising a free layer structure, a tunnel barrier, and a reference layer structure, wherein one or more surfaces of the free layer structure is exposed to respond to a pressure medium; and a voltage source coupled to the magnetic tunnel junction, the voltage source providing electrical power to the free layer structure and the reference layer structure. The device further comprises a current detector coupled between the magnetic tunnel junction and the voltage source; and a pressure calculating device, configured to calculate a pressure based on a current detected by the current detector.

主权项

1. A pressure sensor device, the pressure sensor device comprising:
a magnetic tunnel junction comprising a free layer structure, a tunnel barrier, and a reference layer structure, wherein one or more surfaces of the free layer structure is exposed to respond to a pressure medium; a voltage source coupled to the magnetic tunnel junction, the voltage source providing electrical power to the free layer structure and the reference layer structure; a current detector coupled between the magnetic tunnel junction and the voltage source; and a pressure calculating device, configured to calculate a pressure based on a current detected by the current detector.