Structural and magnetic properties of phase controlled iron oxide rods

Abstract

Iron oxide rods are synthesized by thermal decomposition of iron (II) acetate at 700 °C. The X-ray powder diffraction measurement confirms the hematite (α-Fe2O3) phase of iron oxide. We observed that the Morin transition depends on applied magnetic field and shift towards lower temperature with increase in applied magnetic field. The Morin temperature at applied field of 500 and 2000 Oe is observed to be 261.1 and 260.3 K respectively. Magnetization versus magnetic field measurements confirms the antiferromagnetic behavior below Morin transition and weak ferromagnetic behavior above Morin transition.

Department(s)

Physics, Astronomy, and Materials Science

Document Type

Article

DOI

https://doi.org/10.1016/j.matlet.2010.10.001

Keywords

iron oxide, magnetization, morin transition, antiferromagnetic, ferromagnetic

Publication Date

2011

Journal Title

Materials Letters

Link to Full Text

Share

COinS