Effects of the shape of spin gate elements on their magnetic and magnetoresistive characteristics

The effect of the geometric shape of elements of a spin-dependent tunneling gate on their magnetic characteristic is studied theoretically and experimentally. The hysteresis dependences of the magnetization and magnetoresistance of rectangular, hexagonal, and ringed elements on the magnetic field are calculated for different characteristically geometric parameters of the elements. In the studies of the magneto-optical Kerr effect, magnetic hysteresis loops are observed. The calculated and experimental magnetization curves are compared, and qualitative agreement between the curves is gained.