High coercivity of ultra-high-density ordered Co nanorod arrays

被引：10

作者：

Shibauchi, T ^{[1
]}

Krusin-Elbaum, L

Gignac, L

Black, CT

Thurn-Albrecht, T

Russell, TP

Schotter, J

Kästle, GA

Emley, N

Tuominen, MT

机构：

[1] IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA

[2] Univ Massachusetts, Dept Polymer Sci & Engn, Amherst, MA 01003 USA

[3] Univ Massachusetts, Dept Phys & Astron, Amherst, MA 01003 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 226卷

关键词：

hysteresis-magnetic; coercivity; nanocrystalline materials;

D O I：

10.1016/S0304-8853(00)00958-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on magnetic properties of well-ordered ultra-high density (1.25x10(12)/in(2)) arrays of vertically oriented high-aspect-ratio Co nanorods having a 14nm diameter. The arrays were fabricated by electrodeposition within the pores of a nanoscale template derived from films of diblock copolymers. We find large coercivity enhancement (H(c)approximate to3 kOe at 5 K and 800 Oe at 300 K) relative to a continuous Co film of comparable thickness. The high coercivity in our ordered arrays is contrasted with a distinct decrease of coercivity below similar to 50 nm rod diameter in a randomly positioned nanorod assembly. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：1553 / 1554

页数：2

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