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 journalArticle

23 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

Fingerprint

Hematite
hematite
Silicon Dioxide
Magnetic properties
Optical properties
Silica
Nanoparticles
silicon dioxide
magnetic properties
optical properties
nanoparticles
hydrolysis
Hydrolysis
ferric oxide

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

Cite this

Optical and magnetic properties of elliptical hematite (α-Fe2O3) nanoparticles coated with uniform continuous layers of silica of different thickness. / Shi, Jen Bin; Lee, Chia-Wei; Guo, Jhe Wei; Cheng, Min Jung; Wu, Chien; Chen, Chih Jung; Chen, Cheng Yu; Lin, Ya Ting; Chang, Chung Chieh.

In: Materials Letters, Vol. 61, No. 30, 12.2007, p. 5268-5270.

Research output: Contribution to journalArticle

Shi, Jen Bin ; Lee, Chia-Wei ; Guo, Jhe Wei ; Cheng, Min Jung ; Wu, Chien ; Chen, Chih Jung ; Chen, Cheng Yu ; Lin, Ya Ting ; Chang, Chung Chieh. / Optical and magnetic properties of elliptical hematite (α-Fe2O3) nanoparticles coated with uniform continuous layers of silica of different thickness. In: Materials Letters. 2007 ; Vol. 61, No. 30. pp. 5268-5270.
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AU - Wu, Chien

AU - Chen, Chih Jung

AU - Chen, Cheng Yu

AU - Lin, Ya Ting

AU - Chang, Chung Chieh

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