Growth and magnetic properties of oriented α-Fe2O 3 nanorods

Jih Jen Wu, Ya Lien Lee, Hsuen Han Chiang, Daniel Kwan Pang Wong

Research output: Contribution to journalArticle

112 Citations (Scopus)

Abstract

α-Fe2O3 nanorods have been deposited on Si substrates using the metal-organic chemical vapor deposition method. Structural analyses indicated that α-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 α-Fe2O3 nanorod. Anisotropic magnetic property of the α-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.

Original languageEnglish
Pages (from-to)18108-18111
Number of pages4
JournalJournal of Physical Chemistry B
Volume110
Issue number37
DOIs
Publication statusPublished - 2006 Sep 21

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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