Multi-Track Joint Decoding Schemes Using Two-Dimensional Run-Length Limited Codes for Bit-Patterned Media Magnetic Recording

2016 ◽  
Vol E99.A (12) ◽  
pp. 2248-2255 ◽  
Author(s):  
Hidetoshi SAITO
Keyword(s):  
Magnetic Recording ◽  
Two Dimensional ◽  
Bit Patterned Media ◽  
Patterned Media ◽  
Run Length ◽  
Joint Decoding

Nanopatterned L10-FePt nanoparticles from single-source metallopolymer precursors for potential application in ferromagnetic bit-patterned media magnetic recording

2016 ◽  
Vol 7 (27) ◽  
pp. 4467-4475 ◽  
Author(s):  
Zhengong Meng ◽  
Guijun Li ◽  
Sheung-Mei Ng ◽  
Hon-Fai Wong ◽  
Sze-Chun Yiu ◽  
...  
Keyword(s):  
High Throughput ◽  
Magnetic Recording ◽  
Potential Application ◽  
Nanoimprint Lithography ◽  
Fept Nanoparticles ◽  
Single Source ◽  
Bit Patterned Media ◽  
Patterned Media

A new single-source metallopolymer precursor P was applied for the synthesis of magnetic FePt nanoparticles, which was also suitable for patterning by high-throughput nanoimprint lithography to obtain ferromagnetic nanolines.

scholarly journals Micromagnetic Simulation of L10-FePt-Based Exchange-Coupled-Composite-Bit-Patterned Media with Microwave-Assisted Magnetic Recording at Ultrahigh Areal Density

Micromachines ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1264
Author(s):  
Pirat Khunkitti ◽  
Naruemon Wannawong ◽  
Chavakon Jongjaihan ◽  
Apirat Siritaratiwat ◽  
Anan Kruesubthaworn ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Magnetic Domain ◽  
Hysteresis Loops ◽  
Areal Density ◽  
Bit Patterned Media ◽  
Patterned Media ◽  
Microwave Assisted ◽  
The Media ◽  
5 Ghz ◽  
Exchange Coupled Composite

In this work, we propose exchange-coupled-composite-bit-patterned media (ECC-BPM) with microwave-assisted magnetic recording (MAMR) to improve the writability of the magnetic media at a 4 Tb/in2 recording density. The suitable values of the applied microwave field’s frequency and the exchange coupling between magnetic dots, Adot, of the proposed media were evaluated. It was found that the magnitude of the switching field, Hsw, of the bilayer ECC-BPM is significantly lower than that of a conventional BPM. Additionally, using the MAMR enables further reduction of Hsw of the ECC-BPM. The suitable frequency of the applied microwave field for the proposed media is 5 GHz. The dependence of Adot on the Hsw was additionally examined, showing that the Adot of 0.14 pJ/m is the most suitable value for the proposed bilayer ECC-BPM. The physical explanation of the Hsw of the media under a variation of MAMR and Adot was given. Hysteresis loops and the magnetic domain of the media were characterized to provide further details on the results. The lowest Hsw found in our proposed media is 12.2 kOe, achieved by the bilayer ECC-BPM with an Adot of 0.14 pJ/m using a 5 GHz MAMR.

Antiferromagnetically coupled capped bit patterned media for high-density magnetic recording

2011 ◽  
Vol 98 (1) ◽  
pp. 012513 ◽  
Author(s):  
Marko V. Lubarda ◽  
Shaojing Li ◽  
Boris Livshitz ◽  
Eric E. Fullerton ◽  
Vitaliy Lomakin
Keyword(s):  
Magnetic Recording ◽  
High Density ◽  
Bit Patterned Media ◽  
Patterned Media ◽  
High Density Magnetic Recording
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