Magnetic Properties and Structural Changes in Co<sub>50</sub>Pt<sub>5<sub>0 </sub></sub>and Co<sub>50</sub>Pt<sub><sub>50</sub><sub>-</sub><sub>x</sub> </sub>Pd<sub><sub>x </sub> </sub>Solid Solutions Films
We studied the thin ﬁlms of Co50Pt50 and Co50Pt50-xwith thicknesses between 20 and 1000 ˚Pdx A. Thinner ﬁlms after annealing showed formation of tetragonal ordered crystallites in their fcc lattice, whichare oriented sothattheeasy magnetizationaxisisperpendiculartotheﬁlmplane.Thecoercivity depends on the thickness of ﬁlm. These properties are discussed with respect to the annealing treatment and long-range order degree of the ﬁlms.