NEXAFS studies of La0.8Bi0.2Fe1-xMnxO3(0.0≤x≤0.4) multiferroic system using x-ray absorption spectroscopy

Title
NEXAFS studies of La0.8Bi0.2Fe1-xMnxO3(0.0≤x≤0.4) multiferroic system using x-ray absorption spectroscopy
Authors
G. AnjumR. KumarS. MollahP. Thakur가우탐채근화
Keywords
NEXAFS; Multiferroic
Issue Date
2011-02
Publisher
Journal of physics D, applied physics
Citation
VOL 44, NO 7, 075403-1-075403-8
Abstract
We report the electronic structure studies of well-characterized La0.8Bi0.2Fe1−xMnxO3 (LBFM, 0.0 ≤ x ≤ 0.4) multiferroic samples investigated by soft x-ray absorption spectroscopy at O K-, Mn L3,2-, Mn K-, Fe L3,2- and La M4,5-edges along with the spectra of reference compounds. The investigations are performed to find out the chemical states and crystal field symmetry of ions present in the LBFM multiferroic samples after the substitution of Mn ions at Fe sites. Studies reveal a slight shift in the peak positions of O K-edge spectra along with growth in intensities of low-energy features. An analysis of the Mn L3,2- and K-edge, in addition to the comparison with the spectra of reference compounds, indicates that the Mn ions are present in mixed valence states. It is found that the Mn ions are mainly in +3 states along with a small contribution of +2 and +4 ones. The study of Fe L3,2-edge confirms the trivalent state of Fe ion. M4,5-edges of La corroborate the +3 state of La in the system. Atomic multiplet calculations are also performed on Fe L3,2-, Mn L3,2- and La M4,5-edges to further verify the valency, symmetry and the crystal field splitting.
URI
http://pubs.kist.re.kr/handle/201004/40793
ISSN
0022-3727
Appears in Collections:
KIST Publication > Article
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