Fast precessional reversal in perpendicular composite patterned media

被引：12
|
作者：
Livshitz, B. [1 ]
Choi, R. [1 ]
Inomata, A. [2 ,3 ]
Bertram, H. N. [2 ]
Lomakin, V. [1 ]
机构：
[1] Univ Calif San Diego, Dept Elect & Comp Engn, San Diego, CA 92093 USA
[2] Univ Calif San Diego, Ctr Magnet Recording Res, San Diego, CA 92093 USA
[3] Fujitsu Labs Ltd, Storage & Intelligent Syst Labs, Atsugi, Kanagawa 2430197, Japan
来源：
JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 07期
关键词：
D O I：
10.1063/1.2837504
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Magnetization reversal mechanisms in composite exchange-coupled dual-layer (composite) patterned media are allowed in the regime of precessional reversal, which is characterized by substantially reduced reversal fields. An important property of precessional reversal in composite patterned media is that it can occur for recording field rise times of more than an order larger than those in patterned media comprising homogeneous elements. These longer rise times can be allowed by realistic recording systems even for materials with ultrahigh coercivity. The reversal field and rise times required for precessional reversal can be controlled by varying the soft layer parameters and coupling strength between the layers. (c) 2008 American Institute of Physics.
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页数：3
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