Magnetic properties and crystal structures of self-ordered ferromagnetic nanowires by ac electroforming

被引：27

作者：

Lee, KH ^{[1
]}

Lee, HY

Jeung, WY

Lee, WY

机构：

[1] Korea Inst Sci & Technol, Met Proc Res Ctr, Seoul 136791, South Korea

[2] Korea Inst Sci & Technol, Nano Devices Res Ctr, Seoul 136791, South Korea

来源：

JOURNAL OF APPLIED PHYSICS | 2002年 / 91卷 / 10期

关键词：

D O I：

10.1063/1.1450827

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated the magnetic properties and crystal structures of alpha-Fe and Fe21Ni79 nanowire arrays fabricated by ac electroforming into self-ordered nanosized pores in anodic aluminum oxide (AAO). The nanopores were found to have diameters of 5-100 nm and aspect ratios of 300-1000 depending on the anodization conditions. X-ray diffraction patterns provide direct experimental evidence that the alpha-Fe and Fe21Ni79 nanowires have preferred crystallographic orientations, indicating that those were electroformed in the (221) and (220) orientations, respectively. For the alpha-Fe (Fe21Ni79) nanowires, coercivity H-c and squareness M-r/M-s were found to be similar to2.02 (similar to1.20) kOe and similar to0.9 (similar to0.99), respectively. It is observed that the coercivity in Fe21Ni79 nanowires increased up to 1.35 kOe with increasing annealing temperature. (C) 2002 American Institute of Physics.

引用

页码：8513 / 8515

页数：3

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