Patterning of granular magnetic media with a focused ion beam to produce single-domain islands at >140 Gbit/in2

被引：61

作者：

Rettner, CT ^{[1
]}

Best, ME ^{[1
]}

Terris, BD ^{[1
]}

机构：

[1] IBM Corp, Almaden Res Ctr, Div Res, San Jose, CA 95120 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2001年 / 37卷 / 04期

关键词：

focused ion beam; magnetic arrays; patterned media;

D O I：

10.1109/20.950927

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：

We have used a focused ion beam to directly pattern thin- film granular perpendicular Co70Cr18Pt12 media. By cutting trenches similar to6 nm deep in the similar to 20 mn media, we have produced square arrays of magnetically isolated islands with periods in the range 65-500 mn. At periods below similar to 130 mn we observe only single magnetic domains, which exhibit a rough "checker-board" pattern of upon ac demagnetization. We have patterned at densities of over 140 Gbit/in(2).

引用

页码：1649 / 1651

页数：3

共 17 条

[1] Magnetization reversal in arrays of perpendicularly magnetized ultrathin dots coupled by dipolar interaction [J].

Aign, T ;

Meyer, P ;

Lemerle, S ;

Jamet, JP ;

Ferré, J ;

Mathet, V ;

Chappert, C ;

Gierak, J ;

Vieu, C ;

Rousseaux, F ;

Launois, H ;

Bernas, H .

PHYSICAL REVIEW LETTERS, 1998, 81 (25) :5656-5659

[2] Planar patterned magnetic media obtained by ion irradiation [J].

Chappert, C ;

Bernas, H ;

Ferré, J ;

Kottler, V ;

Jamet, JP ;

Chen, Y ;

Cambril, E ;

Devolder, T ;

Rousseaux, F ;

Mathet, V ;

Launois, H .

SCIENCE, 1998, 280 (5371) :1919-1922

[3] Thermal stability of recorded information at high densities [J].

Charap, SH ;

Lu, PL ;

He, YJ .

IEEE TRANSACTIONS ON MAGNETICS, 1997, 33 (01) :978-983

[4] Nanolithographically defined magnetic structures and quantum magnetic disk [J].

Chou, SY ;

Krauss, PR ;

Kong, LS .

JOURNAL OF APPLIED PHYSICS, 1996, 79 (08) :6101-6106

[5] Patterned magnetic nanostructures and quantized magnetic disks [J].

Chou, SY .

PROCEEDINGS OF THE IEEE, 1997, 85 (04) :652-671

[6] Sub-50 nm planar magnetic nanostructures fabricated by ion irradiation [J].

Devolder, T ;

Chappert, C ;

Chen, Y ;

Cambril, E ;

Bernas, H ;

Jamet, JP ;

Ferré, J .

APPLIED PHYSICS LETTERS, 1999, 74 (22) :3383-3385

[7] Magnetic nanoparticle array with perpendicular crystal magnetic anisotropy [J].

Haginoya, C ;

Heike, S ;

Ishibashi, M ;

Nakamura, K ;

Koike, K ;

Yoshimura, T ;

Yamamoto, J ;

Hirayama, Y .

JOURNAL OF APPLIED PHYSICS, 1999, 85 (12) :8327-8331

[8] Dynamics of the magnetization reversal in Au/Co/Au micrometer-size dot arrays [J].

Jamet, JP ;

Lemerle, S ;

Meyer, P ;

Ferre, J ;

Bartenlian, B ;

Bardou, N ;

Chappert, C ;

Veillet, P ;

Rousseaux, F ;

Decanini, D ;

Launois, H .

PHYSICAL REVIEW B, 1998, 57 (22) :14320-14331

[9] Domain structure of magnetic layers deposited on patterned silicon [J].

Landis, S ;

Rodmacq, B ;

Dieny, B ;

Dal'Zotto, B ;

Tedesco, S ;

Heitzmann, M .

APPLIED PHYSICS LETTERS, 1999, 75 (16) :2473-2475

[10]

LOHAU J, 2000, UNPUB IEEE T MAGN

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Patterning of granular magnetic media with a focused ion beam to produce single-domain islands at &gt;140 Gbit/in2

Patterning of granular magnetic media with a focused ion beam to produce single-domain islands at >140 Gbit/in2