Synthesis and characterization of magnetic cobalt ferrite nanomaterials

Poi Sim Khiew, Thian Khoon Tan, Wee Siong Chiu, Shahidan Radiman, Roslan Abd. Shukor, Chin Hua Chia

Research output: Contribution to journalArticle

Abstract

There are much research interests on the production of uniform magnetic nanomaterials in recent years as a result of their peculiar properties that can be exploited in many technological applications. It is well-known that some dominant intrinsic magnetic behaviors such as saturation magnetization (M s) and coercivity (Hc) of the particles exhibit profound size-dependent properties. Thus, in the current work, we haaave adopted the unique micellar self-assembly structures as the reaction template for the production of high coercivity cobalt ferrite (CoFe2O4) magnetic nanomaterials. The as-synthesized nanomaterials are found to possess face center cubic crystalline structure, as been illustrated in the X-ray diffraction analysis. Morphological characterization on the nanomaterials revealed that the sizes of the nanoparticles are ranging from 10.0 - 70.0 nm. The formation of the ferrite structure is found to be prominent in high annealing temperature as a result of the profound interdiffusion process. As expected, the coercivity and saturation magnetization of the magnetic nanomaterials is found greatly dependent on the particle size. Therefore, by adopting suitable reaction template and proper heat treatment, the magnetic properties of the cobalt ferrite nanomaterials can be well-tuned. Hence, the current synthetic method facilitates a novel and cost-effective approach for the production of various soft magnetic nanomaterials.

Original languageEnglish
Pages (from-to)163-168
Number of pages6
JournalMalaysian Journal of Microscopy
Volume6
Issue number1
Publication statusPublished - 2010

Fingerprint

Nanostructures
Nanostructured materials
coercivity
Ferrite
ferrites
Cobalt
cobalt
templates
synthesis
saturation
Coercive force
magnetization
Saturation magnetization
self assembly
heat treatment
magnetic properties
costs
nanoparticles
annealing
diffraction

Keywords

  • Colloidal synthesis
  • Electron microscopy
  • Magnetic nanomaterials
  • Nanocrystalline structure

ASJC Scopus subject areas

  • Histology
  • Pathology and Forensic Medicine
  • Instrumentation

Cite this

Synthesis and characterization of magnetic cobalt ferrite nanomaterials. / Khiew, Poi Sim; Tan, Thian Khoon; Chiu, Wee Siong; Radiman, Shahidan; Abd. Shukor, Roslan; Chia, Chin Hua.

In: Malaysian Journal of Microscopy, Vol. 6, No. 1, 2010, p. 163-168.

Research output: Contribution to journalArticle

Khiew, Poi Sim ; Tan, Thian Khoon ; Chiu, Wee Siong ; Radiman, Shahidan ; Abd. Shukor, Roslan ; Chia, Chin Hua. / Synthesis and characterization of magnetic cobalt ferrite nanomaterials. In: Malaysian Journal of Microscopy. 2010 ; Vol. 6, No. 1. pp. 163-168.
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