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Title: Ozone assisted thermal oxidation for fabrication of iron oxide nano-wall arrays with high magnetoresistance
Authors: Jeng Shiung Chen
Liang-Chen Huang
Chu-Shou Yang
Jeff Tsung-Hui Tsai
Contributors: 國立臺灣海洋大學:光電科學研究所
Keywords: Two dimensional nanomaterials
Thermal oxidation
Date: 2017
Issue Date: 2017-02-16T03:20:35Z
Publisher: Vacuume
Abstract: Abstract: Two dimensional (2D) vertically-aligned crystalline α-Fe2O3 nano-wall arrays were prepared by thermal oxidation of iron substrates under the O3 ambient. It is found that α-Fe2O3 nano-partitions can be produced in a process temperature region of 450–500 °C. Higher growth temperatures (650–700 °C) produced wholly nanowires. The transition from 2D sheet-like nanostructures to 1D nanowires can be described by surface diffusion growth mechanism. The iron oxide nanowires present very weak magnetoresistance at different magnetic fields. However, the α-Fe2O3 nano-partitions have very strong magnetoresistive properties which a high of 45% resistance variation obtained at low magnetic field of 300 Gauss. This unique property shows the potential of iron oxide nano-partition arrays in detection magnetic field and solid state memory applications.
Relation: 137
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41440
Appears in Collections:[光電科學研究所] 期刊論文

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