Experimental Effects of Laser Power on the Writability and Pulse Width in a Heat Assisted Longitudinal Recording System.

• Rausch Tim

  Data Storage Systems Center, Carnegie Mellon University

• Bain James A.

  Data Storage Systems Center, Carnegie Mellon University

• Stancil Daniel D.

  Data Storage Systems Center, Carnegie Mellon University

• Schlesinger Tuviah E.

  Data Storage Systems Center, Carnegie Mellon University

• Challener William A.

  Seagate Research

• McDaniel Terry

  Seagate Research

• Deeman Neil

  Seagate Technology

• Brucker Charles

  Seagate Technology

抄録

In this paper the effects of increasing laser power on the writability and pulse width at half max (PW₅₀) were experimentally measured on a longitudinal CoCrPt recording medium in a heat assisted magnetic recording system. The dynamic coercivity, quantified by spin stand measurements, was found to decrease linearly with laser power. Furthermore, it was found that careful optimization of laser power and write current are required to minimize the PW₅₀. By choosing an optimal combination of write current and laser power it was possible to achieve a PW₅₀ with heat assistance that could not otherwise have been reached. The results of this study help to establish the viability of heat assisted magnetic recording technology as a potential solution to density limits set by superparamagnetism.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 42 (2B), 989-994, 2003

  The Japan Society of Applied Physics

キーワード

• hybrid recording
• thermally assisted recording
• heat assisted magnetic recording
• pulse width at half max
• writability
• temperature dependent dynamic coercivity

詳細情報

• CRID: 1390282681231572864
• NII論文ID: 10010797686
• NII論文ID: 210000054622
• NII書誌ID: AA10457675
• DOI: 10.1143/jjap.42.989
• ISSN: 13474065
• ISSN: 00214922
• NDL書誌ID: 6469778
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6469778
• Web Site: http://stacks.iop.org/1347-4065/42/i=2S/a=989/pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可