CRO2 CO MULTILAYERS ON CU(100)

CrO2/Co multilayers, consisting of four layers of Co and one layers Cr O2, have been fabricated on Cu(100) by a new technique of utilizing th e thermodynamic sink of CrO,. The multilayers exhibit an easy magnetiz ation axis in plane and the rotation angle increased rapidly with film thickness. Four CrO2/Co repeats are sufficient to yield a Kerr rotati on angle 0.09 degrees, suitable for technological applications. The co ercivity decreases from 105 Oe for clean four layers of Co to 80 Oe fo r clean four CrO2/Co repeats. The effect of carbon doping, excess Cr, and other modifications on the magnetic properties are discussed.