Magnetostatic energy and magnetization process in multilayers with perpendicular anisotropy

Origin and control of exchange-bias-like phenomenon in coupled ferromagnetic [Pt/Co]/NiFe bilayers

“…It could be ascribed to an effective improved texture of the system but also to a stronger signal resulting from the increasing Pt buffer thickness. 17,18 although FWHM values may be influenced by different microstructural parameters. 19 The correlation between the apparent improved structural quality of the system with increasing t Pt and the perpendicular magnetic anisotropy was studied by measuring the anisotropy constant of the bare [Pt/Co] multilayer vs thickness of the buffer layer by EHE.…”

Micromagnetic analysis of magnetization reversal in CoPt alloy films

“…Much work has been done on numerical simulations of the magnetization reversal processes in magneto-optic storage material with perpendicular anisotropy [11][12][13][14]. It has also been shown in Co/Pt multilayers [15] that grain size is a key factor for nucleation and domain formation in thin films.…”

Long-Range Domain Wall Tension in Pt/Co/Pt Films with Perpendicular Magnetic Anisotropy

“…The DW energy density per unit area w ð¼ " d =t f Þ is finally determined to be 4:5 AE 0:7 mJ/m 2 , which is typical in Co and Pt based PMA films. 20,21) It is worthwhile to compare our experimental value w with the Bloch wall energy formula w ¼ 4ðAKÞ 1=2 where A is the exchange stiffness. By use of the experimentally determined values w and K, the exchange stiffness A is estimated to be ð1:5 AE 0:5Þ Â 10 À12 J/m, which is about one order smaller than the bulk value.…”