Exchange anisotropy in cobalt

الملخص EN

The magnetic behavior of Co/CoO bilayers prepared by rf sputtering was studied for Co layer thickness ranging between 100 and 290 A.

X-ray diffraction results indicated that the films are composed of hep Co and fee CoO.

Magnetic measurements showed that the coercivity of the films decreases with increasing the temperature and, fdm thickness.

The field cooled films showed a shift in the hysteresis loops.

The hysteresis shift was found to decrease with increasing temperature and film thickness, No shift was observed at temperatures above 250 K.