Areal density limits for perpendicular magnetic recording

被引：75

作者：

Victora, RH ^{[1
]}

Xue, JH ^{[1
]}

Patwari, M ^{[1
]}

机构：

[1] Univ Minnesota, Ctr Micromagnet & Informat Technol, Dept Elect & Comp Engn, Minneapolis, MN 55455 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2002年 / 38卷 / 05期

基金：

美国国家科学基金会;

关键词：

high-density perpendicular recording; intergranular exchange; micromagnetics; permeability;

D O I：

10.1109/TMAG.2002.802791

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A strategy for high-density perpendicular magnetic recording with a soft underlayer is introduced. The approach is based on three concepts: 1) the nonzero magnetic susceptibility of the recording layer; 2) the use of intergranuIar exchange to partially cancel magnetostatic effects; and 3) a novel head architecture. Micromagnetic simulations involving recording head, soft underlayer, and recording layer are employed to specify a particularly advantageous design. It is shown that the expected density approaches 1 Tbit/in(2).

引用

页码：1886 / 1891

页数：6

共 10 条

[1] SNR and density limit estimates: A comparison of longitudinal and perpendicular recording [J].

Bertram, HN ;

Williams, M .

IEEE TRANSACTIONS ON MAGNETICS, 2000, 36 (01) :4-9

[2] One terabit per square inch perpendicular recording conceptual design [J].

Mallary, M ;

Torabi, A ;

Benakli, M .

IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (04) :1719-1724

[3] POSSIBILITIES OF PERPENDICULAR MAGNETIC RECORDING [J].

NAKAMURA, Y ;

TAGAWA, I .

IEEE TRANSACTIONS ON MAGNETICS, 1988, 24 (06) :2329-2334

[4] Thermal stability and SNR of coupled granular/continuous media [J].

Sonobe, Y ;

Weller, D ;

Ikeda, Y ;

Schabes, M ;

Takano, K ;

Zeltzer, G ;

Yen, BK ;

Best, ME ;

Greaves, SJ ;

Muraoka, H ;

Nakamura, Y .

IEEE TRANSACTIONS ON MAGNETICS, 2001, 37 (04) :1667-1670

[5] Micromagnetic model of perpendicular head and double-layer media for 100 Gb/in2 [J].

Victora, RH ;

Khan, M .

IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (01) :181-185

[6] Superlattice magnetic recording media: experiment and simulation [J].

Victora, RH ;

Peng, WB ;

Xue, JH ;

Judy, JH .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2001, 235 (1-3) :305-311

[7] The feasibility of magnetic recording at 1 Terabit per square inch [J].

Wood, R .

IEEE TRANSACTIONS ON MAGNETICS, 2000, 36 (01) :36-42

[8] Micromagnetic predictions for thermally assisted reversal over long time scales [J].

Xue, JH ;

Victora, RH .

APPLIED PHYSICS LETTERS, 2000, 77 (21) :3432-3434

[9] Micromagnetic predictions of bit decay caused by thermal fluctuations over long time scales [J].

Xue, JH ;

Victora, RH .

JOURNAL OF APPLIED PHYSICS, 2001, 89 (11) :6985-6987

[10] Micromagnetic analysis of the effect of intergranular exchange on thermal stability in magnetic recording (III): Perpendicular media [J].

Zhou, H ;

Bertram, HN ;

Schabes, ME .

IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (02) :1422-1428

← 1 →