View : 17 Download: 0

Raman studies of Ti1-xFexO2 nanoparticles

Title
Raman studies of Ti1-xFexO2 nanoparticles
Authors
Van Minh N.Long D.H.Khoi N.T.Jung Y.Kim S.-J.Yang I.-S.
Ewha Authors
김성진양인상
SCOPUS Author ID
김성진scopus; 양인상scopus
Issue Date
2008
Journal Title
IEEE Transactions on Nanotechnology
ISSN
1536-125XJCR Link
Citation
vol. 7, no. 2, pp. 177 - 180
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Ti1-xFexO2 (x = 0.00-0.13) nanoparticle samples were prepared by hydrolysis method. We investigated the effects of Fe doping on the structural and magnetic properties of the Ti1-xFe xO2 nanoparticle system. Scanning electron microscopy and X-ray diffraction measurements confirm that the particle size of the powder is in nanoscale, and that the magnetic Fe impurities substitute for the Ti sites in the anatase TiO2 phase. All the samples with x > 0 were found to be super-paramagnetic at room temperature by magnetization measurements. Raman spectra also strongly support that the Fe atoms go into the Ti-site in the TiO2 structure. For comparison, ceramic Ti1-xFe xO2 samples were also prepared by usual ceramic method. Ferromagnetism was observed only in the ceramic Ti1-xFe xO2 system. Additional Raman peak at around 610 cm -1 is observed only in the ceramic samples. This may be related to the clusters created by mixture of various valence state of Fe, which probably would be the cause for ferromagnetism observed in the ceramic Ti 1-xFexO2 system. © 2008 IEEE.
DOI
10.1109/TNANO.2008.917841
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE