Characterization on the morphologies and structures of magnetite (Fe 3O4) nanocrystals

W. S. Chiu, T. K. Tan, P. S. Khiew, D. Isa, M. Cloke, Shahidan Radiman, Roslan Abd. Shukor, Muhammad Azmi Abdul Hamid, C. H. Chiah, N. M. Huang, H. N. Lim

Research output: Contribution to journalArticle

Abstract

This report is a simple and reproducible technique to prepare high quality colloidal Fe3O4 nanocrystals (NCs) with controlled size, shape and narrow size distribution without any size sorting process. The method is based on the pyrolysis of self-made iron oléate precursor by using oleic acid, that which extracted from natural palm oil as capping ligands. By controlling the growth time, the size of the NCs can be tuned within the range of 4-18 nm diameters with a standard deviation less than 18% of the mean diameter. TEM micrograph shows that NCs are highly monodisperse and spherical in shape. By controlling the evaporation rate of the solvents, the NCs selfassembled into monolayer and bi-layer into triangle "island" in an ordered hexagonal closed-packed superlattices. X-ray diffraction (XRD) pattern reveals that all the peaks of the NCs can be indexed with the standard sample. Measurements from vibrating sample magnetometer (VSM) showed that the magnetic properties correlate directly with the size of the NCs.

Original languageEnglish
Pages (from-to)146-151
Number of pages6
JournalMalaysian Journal of Microscopy
Volume5
Issue number1
Publication statusPublished - 2009

Fingerprint

Ferrosoferric Oxide
Magnetite
magnetite
Nanoparticles
Nanocrystals
nanocrystals
Palm oil
oleic acid
evaporation rate
Oleic acid
Superlattices
Magnetometers
Oleic Acid
classifying
Sorting
Islands
X-Ray Diffraction
triangles
magnetometers
Diffraction patterns

Keywords

  • Crystal morphology
  • Growth from solution
  • Iron oxide
  • Magnetic properties
  • Nanomaterials

ASJC Scopus subject areas

  • Histology
  • Pathology and Forensic Medicine
  • Instrumentation

Cite this

Chiu, W. S., Tan, T. K., Khiew, P. S., Isa, D., Cloke, M., Radiman, S., ... Lim, H. N. (2009). Characterization on the morphologies and structures of magnetite (Fe 3O4) nanocrystals. Malaysian Journal of Microscopy, 5(1), 146-151.

Characterization on the morphologies and structures of magnetite (Fe 3O4) nanocrystals. / Chiu, W. S.; Tan, T. K.; Khiew, P. S.; Isa, D.; Cloke, M.; Radiman, Shahidan; Abd. Shukor, Roslan; Abdul Hamid, Muhammad Azmi; Chiah, C. H.; Huang, N. M.; Lim, H. N.

In: Malaysian Journal of Microscopy, Vol. 5, No. 1, 2009, p. 146-151.

Research output: Contribution to journalArticle

Chiu, WS, Tan, TK, Khiew, PS, Isa, D, Cloke, M, Radiman, S, Abd. Shukor, R, Abdul Hamid, MA, Chiah, CH, Huang, NM & Lim, HN 2009, 'Characterization on the morphologies and structures of magnetite (Fe 3O4) nanocrystals', Malaysian Journal of Microscopy, vol. 5, no. 1, pp. 146-151.
Chiu WS, Tan TK, Khiew PS, Isa D, Cloke M, Radiman S et al. Characterization on the morphologies and structures of magnetite (Fe 3O4) nanocrystals. Malaysian Journal of Microscopy. 2009;5(1):146-151.
Chiu, W. S. ; Tan, T. K. ; Khiew, P. S. ; Isa, D. ; Cloke, M. ; Radiman, Shahidan ; Abd. Shukor, Roslan ; Abdul Hamid, Muhammad Azmi ; Chiah, C. H. ; Huang, N. M. ; Lim, H. N. / Characterization on the morphologies and structures of magnetite (Fe 3O4) nanocrystals. In: Malaysian Journal of Microscopy. 2009 ; Vol. 5, No. 1. pp. 146-151.
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