High Temperature Magnetic Properties of Indirect Exchange Spring FePt/M(Cu,C)/Fe Trilayer Thin Films

Figure 4

(Color online) Room temperature M-H loops of FePt(30 nm)/M(x nm)/Fe(5 nm) trilayer films with M-Cu and C and x = 0–4 nm prepared on Si(111) substrates at ambient temperature and postannealed at 550°C.

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