Two-dimensional coding for probe recording on magnetic patterned media

Hans Groenland; Leon Abelmann

doi:10.1109/TMAG.2007.893137

Two-dimensional coding for probe recording on magnetic patterned media

Hans Groenland, Leon Abelmann

Research output: Contribution to journal › Article › Academic › peer-review

18 Citations (Scopus)

111 Downloads (Pure)

Abstract

The effect of intertrack intersymbol interference in a magnetic patterned medium is studied. A two-dimensional (2-D) channel code is proposed, dedicated to perpendicularly magnetized media without soft underlayer, which exhibit read pulses showing overshoot. Read pulse shapes were investigated using a magnetic-force microscope tip scanning the patterned medium row-by-row. To test different codes, a bit-detection simulation program was developed to generate large amounts of data on which bit error rates can be measured. Application of the 2-D channel code, which implies recording of particular dot positions with fixed bits ("ones", "zeros"), resulted in the elimination of 2-D worst-case bit patterns and a subsequent reduction of detected-bit errors. The accompanying redundancy of 22% is inevitable for this type of 2-D code.

Original language	English
Pages (from-to)	2307-2309
Number of pages	3
Journal	IEEE transactions on magnetics
Volume	43
Issue number	1, suppl. 6
DOIs	https://doi.org/10.1109/TMAG.2007.893137
Publication status	Published - Jun 2007

Keywords

TST-uSPAM: micro Scanning Probe Array Memory
TST-SMI: Formerly in EWI-SMI
Two-dimensional coding
Patterned Media
Magnetic force microscopy
intertrack interference
perpendicular magnetic recording

Access to Document

10.1109/TMAG.2007.893137

Groenland2007

Cite this

@article{1f6558c901de4332a3d55364fb96208d,

title = "Two-dimensional coding for probe recording on magnetic patterned media",

abstract = "The effect of intertrack intersymbol interference in a magnetic patterned medium is studied. A two-dimensional (2-D) channel code is proposed, dedicated to perpendicularly magnetized media without soft underlayer, which exhibit read pulses showing overshoot. Read pulse shapes were investigated using a magnetic-force microscope tip scanning the patterned medium row-by-row. To test different codes, a bit-detection simulation program was developed to generate large amounts of data on which bit error rates can be measured. Application of the 2-D channel code, which implies recording of particular dot positions with fixed bits ({"}ones{"}, {"}zeros{"}), resulted in the elimination of 2-D worst-case bit patterns and a subsequent reduction of detected-bit errors. The accompanying redundancy of 22% is inevitable for this type of 2-D code.",

keywords = "TST-uSPAM: micro Scanning Probe Array Memory, TST-SMI: Formerly in EWI-SMI, Two-dimensional coding, Patterned Media, Magnetic force microscopy, intertrack interference, perpendicular magnetic recording",

author = "Hans Groenland and Leon Abelmann",

note = "10.1109/TMAG.2007.893137 ",

year = "2007",

month = jun,

doi = "10.1109/TMAG.2007.893137",

language = "English",

volume = "43",

pages = "2307--2309",

journal = "IEEE transactions on magnetics",

issn = "0018-9464",

publisher = "IEEE",

number = "1, suppl. 6",

}

TY - JOUR

T1 - Two-dimensional coding for probe recording on magnetic patterned media

AU - Groenland, Hans

AU - Abelmann, Leon

N1 - 10.1109/TMAG.2007.893137

PY - 2007/6

Y1 - 2007/6

N2 - The effect of intertrack intersymbol interference in a magnetic patterned medium is studied. A two-dimensional (2-D) channel code is proposed, dedicated to perpendicularly magnetized media without soft underlayer, which exhibit read pulses showing overshoot. Read pulse shapes were investigated using a magnetic-force microscope tip scanning the patterned medium row-by-row. To test different codes, a bit-detection simulation program was developed to generate large amounts of data on which bit error rates can be measured. Application of the 2-D channel code, which implies recording of particular dot positions with fixed bits ("ones", "zeros"), resulted in the elimination of 2-D worst-case bit patterns and a subsequent reduction of detected-bit errors. The accompanying redundancy of 22% is inevitable for this type of 2-D code.

AB - The effect of intertrack intersymbol interference in a magnetic patterned medium is studied. A two-dimensional (2-D) channel code is proposed, dedicated to perpendicularly magnetized media without soft underlayer, which exhibit read pulses showing overshoot. Read pulse shapes were investigated using a magnetic-force microscope tip scanning the patterned medium row-by-row. To test different codes, a bit-detection simulation program was developed to generate large amounts of data on which bit error rates can be measured. Application of the 2-D channel code, which implies recording of particular dot positions with fixed bits ("ones", "zeros"), resulted in the elimination of 2-D worst-case bit patterns and a subsequent reduction of detected-bit errors. The accompanying redundancy of 22% is inevitable for this type of 2-D code.

KW - TST-uSPAM: micro Scanning Probe Array Memory

KW - TST-SMI: Formerly in EWI-SMI

KW - Two-dimensional coding

KW - Patterned Media

KW - Magnetic force microscopy

KW - intertrack interference

KW - perpendicular magnetic recording

U2 - 10.1109/TMAG.2007.893137

DO - 10.1109/TMAG.2007.893137

M3 - Article

VL - 43

SP - 2307

EP - 2309

JO - IEEE transactions on magnetics

JF - IEEE transactions on magnetics

SN - 0018-9464

IS - 1, suppl. 6

ER -

Two-dimensional coding for probe recording on magnetic patterned media

Abstract

Keywords

Access to Document

Fingerprint

Cite this