Hydrogenation-induced change of magneto optical Kerr effect in Pd/Fe bilayers

The hydrogenation induced change of magneto-optical Kerr effect (MOKE) was studied in n ML Pd/30 ML Fe bilayers on Al2O3(0001). With the increasing of Pd thickness from 3 ML to 60 ML, the MOKE extinction angle was gradually shifted by 0.6° and the enhancement of Kerr intensity reached 35%–40% after...

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Bibliographic Details
Published in:Journal of applied physics 2012-09, Vol.112 (6)
Main Authors: Lin, Wen-Chin, Chi, Chiao-Sung, Ho, Tsung-Ying, Tsai, Cheng-Jui, Lo, Fang-Yuh, Chuang, Huan-Chia, Chern, Ming-Yau
Format: Article
Language:English
Subjects:
Capping
Hydrogen storage
Hydrogenation
Iron
Kerr effects
Kerr magnetooptical effect
Palladium
Thin films
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Summary:The hydrogenation induced change of magneto-optical Kerr effect (MOKE) was studied in n ML Pd/30 ML Fe bilayers on Al2O3(0001). With the increasing of Pd thickness from 3 ML to 60 ML, the MOKE extinction angle was gradually shifted by 0.6° and the enhancement of Kerr intensity reached 35%–40% after exposure to 1 atm hydrogen. The reversibility of this significant change was demonstrated by cyclic desorption and reabsorption of hydrogen. This study reveals the sensitive MO response in the combination of a magnetic Fe thin film with a highly hydrogenated Pd capping layer.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4754314