Abstract
The perpendicular magnetic anisotropy (PMA) of Pt(t1Pt)/[Co(tCo)/Pt(t2Pt)]n which prepared by magnetron sputtering technique was studied in this article. The impact to PMA and magnetic properties of Co/Pt multilayers was investigated from the aspects of Co layer thicknesses tCo, Pt inner layer thicknesses t2Pt, Pt underlayer thicknesses t1Pt and periodic number n. The test results show that interfacial effects are the main factors which influence the PMA and other macroscopic properties of the samples. From comparison of the test results of magnetic properties the best multilayer structure Pt 1.0 nm/(Co 0.4 nm/Pt 0.8 nm)3 was obtained. Anisotropic energy of the best sample was 2.0 × 105 J.m−3 which indicated that it has good perpendicular magnetic anisotropy.
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