Interlayer Exchange Coupling Effect of L10 CoPt Based Exchange Coupled Composite Media

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Abstract:

In this work, effects of exchange coupling of soft magnetic layer on switching field and magnetization reversal behaviour of CoPt–SiO2(soft)/CoPt–SiO2(hard) exchange coupled media were investigated. With increasing the thickness of the soft layer, both the coercivity and magnetization squareness of composite media decreased. Soft layer thickness 4 nm and below was more effective to significantly reduce the switching field than that above 4 nm. More incoherent switching behavior was observed with increasing soft layer thickness.

Keywords: EXCHANGE COUPLED MEDIA; L10 COPT; REDUCED SWITCHING FIELD

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2011.2702

Publication date: March 1, 2011

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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