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Conferences > CLEO_QELS > 2014 > FM4B > FM4B.2

Ultrafast Exchange-Coupling Strengthening in FeNi/FePt Film Induced by Femtosecond Laser

Zhifeng Chen, Shufa Li, Bingzhi Zhang, and Feipeng Pi

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Abstract

We study laser-induced evolution of exchange coupling in FeNi/L10-FePt film using pump-probe polar Kerr spectroscopy. Ultrafast coupling-strengthening with significant reduction of hard coercivity is observed. The mechanism is discussed.

© 2014 Optical Society of America

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