Ordered Ni nanowire tip arrays sticking out of the anodic aluminum oxide template

Guowen Meng; Anyuan Cao; Ju Yin Cheng; Aravind Vijayaraghavan; Yung Joon Jung; Mutsuhiro Shima; Pulickel M. Ajayan

doi:10.1063/1.1846942

Ordered Ni nanowire tip arrays sticking out of the anodic aluminum oxide template

Guowen Meng, Anyuan Cao, Ju Yin Cheng, Aravind Vijayaraghavan, Yung Joon Jung, Mutsuhiro Shima, Pulickel M. Ajayan

Research output: Contribution to journal › Article › peer-review

Abstract

We present a method for making highly ordered arrays of Ni nanowire (NW) tips fully exposed over the surface of anodic aluminum oxide (AAO) templates with uniform exposed lengths. Ni NWs are electrochemically deposited in the nanochannels of the AAO templates, and the templates surface is selectively etched to expose Ni NW tips of uniform lengths, which can be tuned by adjusting the etching time. The magnetic domain structure and magnetic hysteresis of the Ni NW tips were studied at room temperature, and the results indicate strong magnetic anisotropy for the NW arrays and magnetic coercivities significantly larger than that of bulk Ni. The ordered NW tips fully exposed over the surface of the AAO templates with uniform lengths could have various practical applications. © 2005 American Institute of Physics.

Original language	English
Article number	064303
Journal	Journal of Applied Physics
Volume	97
Issue number	6
DOIs	https://doi.org/10.1063/1.1846942
Publication status	Published - 2005

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title = "Ordered Ni nanowire tip arrays sticking out of the anodic aluminum oxide template",

abstract = "We present a method for making highly ordered arrays of Ni nanowire (NW) tips fully exposed over the surface of anodic aluminum oxide (AAO) templates with uniform exposed lengths. Ni NWs are electrochemically deposited in the nanochannels of the AAO templates, and the templates surface is selectively etched to expose Ni NW tips of uniform lengths, which can be tuned by adjusting the etching time. The magnetic domain structure and magnetic hysteresis of the Ni NW tips were studied at room temperature, and the results indicate strong magnetic anisotropy for the NW arrays and magnetic coercivities significantly larger than that of bulk Ni. The ordered NW tips fully exposed over the surface of the AAO templates with uniform lengths could have various practical applications. {\textcopyright} 2005 American Institute of Physics.",

author = "Guowen Meng and Anyuan Cao and Cheng, {Ju Yin} and Aravind Vijayaraghavan and Jung, {Yung Joon} and Mutsuhiro Shima and Ajayan, {Pulickel M.}",

year = "2005",

doi = "10.1063/1.1846942",

language = "English",

volume = "97",

journal = "Journal of Applied Physics",

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TY - JOUR

T1 - Ordered Ni nanowire tip arrays sticking out of the anodic aluminum oxide template

AU - Meng, Guowen

AU - Cao, Anyuan

AU - Cheng, Ju Yin

AU - Vijayaraghavan, Aravind

AU - Jung, Yung Joon

AU - Shima, Mutsuhiro

AU - Ajayan, Pulickel M.

PY - 2005

Y1 - 2005

N2 - We present a method for making highly ordered arrays of Ni nanowire (NW) tips fully exposed over the surface of anodic aluminum oxide (AAO) templates with uniform exposed lengths. Ni NWs are electrochemically deposited in the nanochannels of the AAO templates, and the templates surface is selectively etched to expose Ni NW tips of uniform lengths, which can be tuned by adjusting the etching time. The magnetic domain structure and magnetic hysteresis of the Ni NW tips were studied at room temperature, and the results indicate strong magnetic anisotropy for the NW arrays and magnetic coercivities significantly larger than that of bulk Ni. The ordered NW tips fully exposed over the surface of the AAO templates with uniform lengths could have various practical applications. © 2005 American Institute of Physics.

AB - We present a method for making highly ordered arrays of Ni nanowire (NW) tips fully exposed over the surface of anodic aluminum oxide (AAO) templates with uniform exposed lengths. Ni NWs are electrochemically deposited in the nanochannels of the AAO templates, and the templates surface is selectively etched to expose Ni NW tips of uniform lengths, which can be tuned by adjusting the etching time. The magnetic domain structure and magnetic hysteresis of the Ni NW tips were studied at room temperature, and the results indicate strong magnetic anisotropy for the NW arrays and magnetic coercivities significantly larger than that of bulk Ni. The ordered NW tips fully exposed over the surface of the AAO templates with uniform lengths could have various practical applications. © 2005 American Institute of Physics.

U2 - 10.1063/1.1846942

DO - 10.1063/1.1846942

M3 - Article

SN - 1089-7550

VL - 97

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 6

M1 - 064303

ER -

Ordered Ni nanowire tip arrays sticking out of the anodic aluminum oxide template

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