Improved coercivity was achieved in perpendicular 10-nm-thick FePt film through an inserted Ag layer. The out-of-plane coercivity increased with increasing Ag thickness, from 2.0 kOe, for the sample without Ag, to 4.4 kOe, for the sample with 3 nm Ag. Silver insertion also reduced the magnetic grain size and affected the magnetic reversal mode in these films.
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