Optical and magnetic properties of elliptical hematite (α-Fe2O3) nanoparticles coated with uniform continuous layers of silica of different thickness

Jen Bin Shi, Chia-Wei Lee, Jhe Wei Guo, Min Jung Cheng, Chien Wu, Chih Jung Chen, Cheng Yu Chen, Ya Ting Lin, Chung Chieh Chang

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Elliptical-type α-Fe2O3 nanoparticles with/without silica shell have been prepared. The core particles were coated with uniform continuous layers of silica of two different thicknesses by hydrolysis of TEOS. The obtained HCP structure elliptical α-Fe2O3 nanoparticles with ∼ 240 nm length and 100 nm width is polycrystalline in nature. The thicknesses of SiO2 shell coated on α-Fe2O3 are about 55 and 30 nm, respectively. The optical and magnetic properties of these nanoparticles have been investigated.

Original languageEnglish
Pages (from-to)5268-5270
Number of pages3
JournalMaterials Letters
Volume61
Issue number30
DOIs
Publication statusPublished - Dec 2007
Externally publishedYes

Keywords

  • Elliptical α-FeO nanoparticles
  • Magnetic materials
  • Nanomaterials
  • Optical properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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