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Published on: July 2, 2018
Patterned media towards Nano-bit magnetic recording: fabrication and challenges
Rachid Sbiaa1, Seidikkurippu N Piramanayagam
1Data Storage Institute, 5, Engineering Drive 1, Singapore - 117 608, Singapore.
Recent Patents on Nanotechnology
|December 17, 2008
Summary
Patterned media offer a solution for increasing hard disk drive (HDD) recording density. Nano-imprint lithography (NIL) is a promising technique for fabricating these high-density, thermally stable magnetic bits cost-effectively.
Area of Science:
- Materials Science
- Nanotechnology
- Data Storage
Background:
- Hard disk drive (HDD) magnetic recording density doubles every 18 months, necessitating thermally stable bits.
- Perpendicular recording media (PMR) is nearing its limit, driving the search for alternative technologies.
- Patterned media, with magnetically isolated bits, present a viable solution for future high-density storage.
Purpose of the Study:
- To review proposed methods for fabricating patterned media for HDDs.
- To focus on nano-imprint lithography (NIL) as a key enabling technology.
- To discuss the latest developments and future prospects of NIL for patterned media.
Main Methods:
- Review of existing patterned media fabrication techniques.
- In-depth analysis of nano-imprint lithography (NIL) for high-resolution, high-density patterning.
- Evaluation of NIL's advantages over conventional lithography (e.g., electron beam, EUV, X-ray).
Main Results:
- Patterned media can overcome limitations of current PMR technology.
- NIL offers high resolution, regular patterns, and high density required for advanced HDD.
- NIL presents a cost-effective and high-throughput solution compared to conventional methods.
Conclusions:
- Nano-imprint lithography is a leading candidate for fabricating next-generation patterned media.
- Further development of NIL and related technologies is crucial for realizing high-density HDD.
- NIL provides a pathway to continued increases in magnetic recording density.
