Istituto dei materiali per l'elettronica ed il magnetismo     
Varvaro G., Albertini F., Elisabetta A., Casoli F., Fiorani D., Laureti S., Lupo P., Ranzieri P., Testa A. Magnetic domain structure and magnetization reversal in Fe/L10-FePt exchange-coupled systems. In: JEMS - Joint European Magnetic Symposia (Krakow, Poland, 23 - 28 agosto 2010).
The L10-FePt alloy has been chosen as hard magnetic component because of its high magnetocrystalline anisotropy and its perpendicular easy axis magnetization when grown on a single-crystalline MgO (100) substrate. Fe films with different thickness (= 2, 3.5 and 5 nm) have been deposited at room temperature on a quasi-continuous L10-FePt layer. Increasing iron thickness, the MFM images become more noisy, indicating an increasing canting of the Fe surface moments as Fe thickness becomes larger than the calculated exchange length (∼ 3 nm).
Subject Magnetic domain
exchange-coupled systems

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