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Title: Investigations of magnetic nanostructures for patterned media
Keywords: Dipolar interactions, Capped bit patterned media, Antiferromagnetically coupled bit patterned media, Switching field distributions
Issue Date: 24-Jul-2012
Citation: MOJTABA RANJBAR (2012-07-24). Investigations of magnetic nanostructures for patterned media. ScholarBank@NUS Repository.
Abstract: Continuing increases in areal density of hard disk drives will be limited by superparamagnetic effect. To address this problem, bit patterned media (BPM) is considered as one of the most promising candidates to enable recording densities increase up to 1 Tbit/inch2. However BPM is not without issues either. One of the fundamental issues associated with BPM is the element to element variation in intrinsic magnetic properties resulting in the widening of switching field distributions (SFD).Therefore, the main focus of this dissertation is trying to understand and minimize the SFD of BPM. For this objective, two approaches such as: Antiferromagnetically coupled (AFC) patterned media and Capped bit patterned media (CBPM) are employed to minimize the SFD of patterned islands. We observed that both approaches open a new pathway to reduce SFD of patterned structures by optimizing magnetic layer structures and a proper fabrication technique.
Appears in Collections:Ph.D Theses (Open)

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