Synthesis and magnetic properties of FeCo alloy nanowire arrays in porous alumina template

Lumei Gao; Xiaoping Song; Pangpang Wang; Sen Yang

Synthesis and magnetic properties of FeCo alloy nanowire arrays in porous alumina template

Lumei Gao, Xiaoping Song, Pangpang Wang, Sen Yang

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

Abstract

Highly ordered porous anodic aluminum oxide (AAO) membranes were prepared by electrochemical method. By alternating current electrodepositing, FeCo alloy nanowire arrays were fabricated in the porous alumina template in a mixed electrolyte of CoSO₄ and FeSO₄. The microstructures of membranes and nanowire arrays were characterized by XRD, TEM and VSM. The results show that the Fe_0.5Co_0.5 nanowire arrays get uniform and regular with a preferred crystal face (200) during growing, a highly perpendicular magnetic anisotropy with remnant magnetization ratio 0.7 and coercivity (1700 Oe) for applied field paralleled to the nanowire arrays is demonstrated. A proper heat treatment enables to greatly enhance the coercivity and remnant magnetization ratio.

Original language	English
Pages (from-to)	1139-1143
Number of pages	5
Journal	Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
Volume	40
Issue number	10
Publication status	Published - Oct 1 2006

All Science Journal Classification (ASJC) codes

Engineering(all)

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title = "Synthesis and magnetic properties of FeCo alloy nanowire arrays in porous alumina template",

abstract = "Highly ordered porous anodic aluminum oxide (AAO) membranes were prepared by electrochemical method. By alternating current electrodepositing, FeCo alloy nanowire arrays were fabricated in the porous alumina template in a mixed electrolyte of CoSO4 and FeSO4. The microstructures of membranes and nanowire arrays were characterized by XRD, TEM and VSM. The results show that the Fe0.5Co0.5 nanowire arrays get uniform and regular with a preferred crystal face (200) during growing, a highly perpendicular magnetic anisotropy with remnant magnetization ratio 0.7 and coercivity (1700 Oe) for applied field paralleled to the nanowire arrays is demonstrated. A proper heat treatment enables to greatly enhance the coercivity and remnant magnetization ratio.",

author = "Lumei Gao and Xiaoping Song and Pangpang Wang and Sen Yang",

year = "2006",

month = oct,

day = "1",

language = "English",

volume = "40",

pages = "1139--1143",

journal = "Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University",

issn = "0253-987X",

publisher = "Xi'an Jiaotong University",

number = "10",

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TY - JOUR

T1 - Synthesis and magnetic properties of FeCo alloy nanowire arrays in porous alumina template

AU - Gao, Lumei

AU - Song, Xiaoping

AU - Wang, Pangpang

AU - Yang, Sen

PY - 2006/10/1

Y1 - 2006/10/1

N2 - Highly ordered porous anodic aluminum oxide (AAO) membranes were prepared by electrochemical method. By alternating current electrodepositing, FeCo alloy nanowire arrays were fabricated in the porous alumina template in a mixed electrolyte of CoSO4 and FeSO4. The microstructures of membranes and nanowire arrays were characterized by XRD, TEM and VSM. The results show that the Fe0.5Co0.5 nanowire arrays get uniform and regular with a preferred crystal face (200) during growing, a highly perpendicular magnetic anisotropy with remnant magnetization ratio 0.7 and coercivity (1700 Oe) for applied field paralleled to the nanowire arrays is demonstrated. A proper heat treatment enables to greatly enhance the coercivity and remnant magnetization ratio.

AB - Highly ordered porous anodic aluminum oxide (AAO) membranes were prepared by electrochemical method. By alternating current electrodepositing, FeCo alloy nanowire arrays were fabricated in the porous alumina template in a mixed electrolyte of CoSO4 and FeSO4. The microstructures of membranes and nanowire arrays were characterized by XRD, TEM and VSM. The results show that the Fe0.5Co0.5 nanowire arrays get uniform and regular with a preferred crystal face (200) during growing, a highly perpendicular magnetic anisotropy with remnant magnetization ratio 0.7 and coercivity (1700 Oe) for applied field paralleled to the nanowire arrays is demonstrated. A proper heat treatment enables to greatly enhance the coercivity and remnant magnetization ratio.

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