Recording comparison of ECC versus conventional media at equal grain size

Hweerin Sohn; R. H. Victora

doi:10.1109/TMAG.2011.2157907

Recording comparison of ECC versus conventional media at equal grain size

Hweerin Sohn, R. H. Victora

Electrical and Computer Engineering

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

5 Scopus citations

Abstract

Transition jitter and shape have been studied for soft exchange coupled composite (ECC) media and conventional perpendicular media using micromagnetic simulation. A realistic medium having nonuniform grain size has been employed. Media anisotropies are optimized to reduce the high density jitter for ECC and conventional media. Surprisingly, jitter is slightly decreased at high temperature for both media types. Eye diagrams show that short bit length amplitude is higher for ECC by approximately 10% at room temperature. This indicates that sharper transitions were obtained for ECC media particularly at 300 K where the thermal stability of ECC media presumably aids the write process.

Original language	English (US)
Article number	6028182
Pages (from-to)	4073-4076
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	47
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2011.2157907
State	Published - Oct 2011

Bibliographical note

Funding Information:
The authors thank Bogdan Valcu for numerous valuable discussions. The authors appreciate financial support from Seagate Technology and computing time from the Minnesota Supercomputing Institute.

Keywords

Exchange coupled composite (ECC) media
micromagnetic simulation
thermal fluctuation
transition jitter

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/TMAG.2011.2157907

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title = "Recording comparison of ECC versus conventional media at equal grain size",

abstract = "Transition jitter and shape have been studied for soft exchange coupled composite (ECC) media and conventional perpendicular media using micromagnetic simulation. A realistic medium having nonuniform grain size has been employed. Media anisotropies are optimized to reduce the high density jitter for ECC and conventional media. Surprisingly, jitter is slightly decreased at high temperature for both media types. Eye diagrams show that short bit length amplitude is higher for ECC by approximately 10% at room temperature. This indicates that sharper transitions were obtained for ECC media particularly at 300 K where the thermal stability of ECC media presumably aids the write process.",

keywords = "Exchange coupled composite (ECC) media, micromagnetic simulation, thermal fluctuation, transition jitter",

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note = "Funding Information: The authors thank Bogdan Valcu for numerous valuable discussions. The authors appreciate financial support from Seagate Technology and computing time from the Minnesota Supercomputing Institute.",

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AU - Victora, R. H.

N1 - Funding Information: The authors thank Bogdan Valcu for numerous valuable discussions. The authors appreciate financial support from Seagate Technology and computing time from the Minnesota Supercomputing Institute.

PY - 2011/10

Y1 - 2011/10

N2 - Transition jitter and shape have been studied for soft exchange coupled composite (ECC) media and conventional perpendicular media using micromagnetic simulation. A realistic medium having nonuniform grain size has been employed. Media anisotropies are optimized to reduce the high density jitter for ECC and conventional media. Surprisingly, jitter is slightly decreased at high temperature for both media types. Eye diagrams show that short bit length amplitude is higher for ECC by approximately 10% at room temperature. This indicates that sharper transitions were obtained for ECC media particularly at 300 K where the thermal stability of ECC media presumably aids the write process.

AB - Transition jitter and shape have been studied for soft exchange coupled composite (ECC) media and conventional perpendicular media using micromagnetic simulation. A realistic medium having nonuniform grain size has been employed. Media anisotropies are optimized to reduce the high density jitter for ECC and conventional media. Surprisingly, jitter is slightly decreased at high temperature for both media types. Eye diagrams show that short bit length amplitude is higher for ECC by approximately 10% at room temperature. This indicates that sharper transitions were obtained for ECC media particularly at 300 K where the thermal stability of ECC media presumably aids the write process.

KW - Exchange coupled composite (ECC) media

KW - micromagnetic simulation

KW - thermal fluctuation

KW - transition jitter

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Recording comparison of ECC versus conventional media at equal grain size

Abstract

Bibliographical note

Keywords

UN SDGs

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