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Title: Magnetic and first-order reversal curve investigations of antiferromagnetically coupled nanostructures of Co/Pd multilayers
Authors: Piramanayagam, S.N.
Ranjbar, M.
Sbiaa, R.
Chong, C.T. 
Keywords: First order reversal curves
Magnetic nanostructures
Magnetic recording
Patterned media
Recording media
Issue Date: 2012
Citation: Piramanayagam, S.N., Ranjbar, M., Sbiaa, R., Chong, C.T. (2012). Magnetic and first-order reversal curve investigations of antiferromagnetically coupled nanostructures of Co/Pd multilayers. IEEE Transactions on Magnetics 48 (11) : 3410-3413. ScholarBank@NUS Repository.
Abstract: Magnetic properties of nanostructures of antiferromagnetically coupled (AFC) Co/Pd multilayers were studied using hysteresis loop and first order reversal curve (FORC) measurements. The thickness of Co sublayer in the stabilizing layer of the AFC was increased in order to reduce the anisotropy constant of the stabilizing layer. It was noticed that the (Co/Pd) ×3 multilayer stack showed a perpendicular magnetic anisotropy (PMA) even when the thickness of Co sublayer was increased to 1 nm. Antiferromagnetic coupling is explained to be the cause of such a PMA. The nanostructures do not show AFC at remanence for Co sublayer thickness below 0.8 nm. AFC at remanence was achieved for Co sublayer thickness of 1 nm. The FORC data indicated four peaks in the case of AFC structures, whereas a single peak was observed in single layered structures and samples where the stabilizing layers did not have a PMA. The observations are fundamentally interesting and useful in reducing switching field distribution in patterned media. © 2012 IEEE.
Source Title: IEEE Transactions on Magnetics
ISSN: 00189464
DOI: 10.1109/TMAG.2012.2207883
Appears in Collections:Staff Publications

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