Heating Temperature Effect on the Magnetic Property of α-Fe Nanoparticle

Abstract

The effect of heating temperature on the magnetic property of α-Fe nanoparticle produced by thermal decomposition method has been investigated. The Fe²⁺-oleate₂ ligand complex was annealed at 400°C in pyrex tube under 10⁻² torr for 2 hrs, and then reduced at a different temperatures under Ar + 4% H₂ mixture gas atmosphere. The magnetic property of α-Fe nanocrystallite was affected with the different heating temperatures. The structure and properties of prepared α-Fe nanoparticle was characterized by TGA, XRD, TEM, and VSM.

Keywords:

• α-Fe nanocrystallite
• soft magnetic
• thermal decomposition

Acknowledgments

Young Chul Han would like to thank to the financial support by Brain Korea 21 project in 2006.