NDLI: A Study of SNR and BER in Heat-Assisted Magnetic Recording

Content Provider	IEEE Xplore Digital Library
Author	Yipeng Jiao Yao Wang Victora, R.H.
Copyright Year	1965
Abstract	Heat-assisted magnetic recording (HAMR) is a promising approach to increase the areal density of hard disk drives. The purpose of this paper is to provide a computational framework for optimizing the HAMR system. In order to do that, an integrated HAMR simulation system was built. We then studied several factors that could affect the playback signal-to-noise ratio (SNR), such as the switching time of the writing field, the peak temperature of the heat spot, the standard deviation of anisotropy field and exchange parameters, and the size of the reader element. We found that bit length (BL) becomes the key factor for the value of SNR for small, e.g., 10 nm, BLs. We established a relationship between the SNR and the bit error rate so that it will be easy to predict the storage capacity based on the playback SNR. This curve is used to predict the possible storage capacity for different BLs.
Sponsorship	IEEE Magnetics Society
Starting Page	1
Ending Page	4
Page Count	4
File Size	1193453
File Format	PDF
ISSN	00189464
Volume Number	51
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal to noise ratio Bit error rate Media Heat-assisted magnetic recording Switches Bit Error Rate Heat Assisted Magnetic Recording Signal-to-noise Ratio signal-to-noise ratio (SNR) Bit error rate (BER) heat-assisted magnetic recording (HAMR)
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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HAMR Noise Mechanism Study With Spin-Stand Testing

SNR Impact of Media Anisotropy Near Curie Temperature in Heat-Assisted Magnetic Recording

The Role of Media Property Distribution in HAMR SNR

Recording Performance and Comparison of Graded-${T_{c}}$ and - ${K_{u}}$ HAMR Systems

Writer and Reader Head-to-Media Spacing Sensitivity Assessment in HAMR

Thermal Stability Analysis on Pattern-Dependent BER and SNR Decay

Optimal Write Head Design for Perpendicular Magnetic Recording

Simulation of Expected Areal Density Gain for Heat-Assisted Magnetic Recording Relative to Other Advanced Recording Schemes

Noise Mitigation in Granular and Bit-Patterned Media for HAMR

A Study of SNR and BER in Heat-Assisted Magnetic Recording

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