Growth and magnetic properties of oriented α-Fe2O3 nanorods

被引：121

作者：

Wu, Jih-Jen ^{[1
]}

Lee, Ya-Lien ^{[1
]}

Chiang, Hsuen-Han ^{[1
]}

Wong, Daniel Kwan-Pang ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 701, Taiwan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 37期

关键词：

D O I：

10.1021/jp0644661

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：

alpha-Fe2O3 nanorods have been deposited on Si substrates using the metal-organic chemical vapor deposition method. Structural analyses indicated that alpha-Fe2O3 nanorods are preferentially oriented in the [104] direction on Si(100) substrates, and the nanorod possesses the single-crystalline structure. MFM image suggests that a spin domain is formed in the alpha-Fe2O3 nanorod. Anisotropic magnetic property of the alpha-Fe2O3 nanorods, i.e., the discrepancy of the saturation magnetization, is observed from SQUID measurements when the magnetic field are applied parallel and perpendicular to the substrate. A lower Morin temperature than that of the macroscopically crystalline hematite is observed when the magnetic field is applied parallel to the substrate.

引用

页码：18108 / 18111

页数：4

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