25-27 November 2015
National Centre for Synchrotron Science
Australia/Melbourne timezone

A structural study and magnetic properties of electrospun carbon/manganese ferrite (C/MnFe2O4) composite nanofibers

27 Nov 2015, 13:30
45m
National Centre for Synchrotron Science

National Centre for Synchrotron Science

Australian Synchrotron 800 Blackburn Road Clayton VIC 3168
Board: AM-16
Poster Advanced Materials Poster Session 2

Speaker

Dr Pinit Kidkhunthod (Synchrotron Light Research Institute (Public Organiztion))

Description

Carbon/manganese ferrite (C/MnFe2O4) composite nanofibers were fabricated using electrospinning technique followed by carbonization process under mixed of air and argon atmosphere at 400, 600 and 800 ˚C, respectively. The prepared composite nanofibers were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), vibrating sample magnetometry (VSM) and X-ray absorption spectroscopy (XAS) including X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS). After calcination at 800 ˚C, the composite nanofibers of C/MnFe2O4 were obtained with a mean diameter of nanofibers of approximately 700 - 800 nm. The structure of MnFe2O4 was successfully studied using XAS technique and was found to be cubic spinel with a coupling of Mn2/Mn3+ and Fe3+ oxidation states . All composite nanofibers exhibited ferromagnetic behavior especially after being calcined at 800 ˚C. This ferromagnetic properties were related to the distribution of cations over tetrahedral and octahedral sites as revealed by EXAFS results.
Keywords Ferrite; Carbon nanofibers; Nanocomposites; X-ray absorption spectroscopy (XAS); Electrospinning

Primary author

Dr Pinit Kidkhunthod (Synchrotron Light Research Institute (Public Organiztion))

Presentation Materials

There are no materials yet.
Your browser is out of date!

Update your browser to view this website correctly. Update my browser now

×