Spin dependent tunneling barriers doped with magnetic particles

A device comprising:

• a first ferromagnetic layer having a magnetic moment with a direction that is substantially fixed in response to an applied magnetic field;
• a second ferromagnetic layer having a magnetic moment with a direction that is variable in response to said applied magnetic field;
• a dielectric layer separating said first and second ferromagnetic layers and having a thickness of less than ten nanometers;
• and
• a plurality of ferromagnetic particles adjoining said dielectric layer and separated from said first and second ferromagnetic layers.

A device comprising:

• a first electrode including a first ferromagnetic layer having a magnetic moment with a direction that is substantially fixed in response to an applied magnetic field;
• a second electrode including a second ferromagnetic layer having a magnetic moment with a direction that is variable in response to said applied magnetic field;
• a dielectric layer separating said first and second ferromagnetic layers and having a thickness of less than ten nanometers;
• and
• a plurality of ferromagnetic particles contained in said dielectric layer and separated from said first and second ferromagnetic layers,
• wherein an electrical current between said electrodes is a function of an orientation of said second magnetic moment relative to that of said first magnetic moment.