Ordered Ni-Cu nanowire array with enhanced coercivity

被引：115

作者：

Guo, YG ^{[1
]}

Wan, LJ ^{[1
]}

Zhu, CF ^{[1
]}

Yang, DL ^{[1
]}

Chen, DM ^{[1
]}

Bai, CL ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2003年 / 15卷 / 03期

关键词：

D O I：

10.1021/cm0208962

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A highly ordered composite Ni-Cu nanowire array has been fabricated within the pores of an anodic aluminum oxide (AAO) template by pulsed electrodeposition, and it has been characterized by transmission electron microscopy (TEM), selected-area electron diffraction (SAED), magnetic force microscopy (MFM), and superconducting quantum-interference device (SQUID) measurements. It was found that all the Ni segments are single magnetic domain and aligned to the same direction after magnetizing under an, external field (perpendicular or parallel to the axes of the nanowires). Magnetization measurements on the array revealed a remarkably enhanced coercivity and a similar high-saturation magnetization compared to that of bulk nickel. Owing to its high bit density (up to 70 Gbits/in(2)), the structure may be suitable for ultrahigh-density magnetic recording media.

引用

页码：664 / 667

页数：4

共 31 条

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