Imperial College London
Alternate

ProfessorNeilAlford

Faculty of Engineering, Department of Materials

Professor of Materials
 
 
 
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Contact

 

+44 (0)20 7594 6724n.alford

 
 
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Assistant

 

Ms Karen Murphy +44 (0)20 7594 3330

 
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Location

 

2..05 (in RSM)Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Liu:2016:10.1021/acs.jpcc.6b03833,
author = {Liu, G and Wang, Y and Zou, B and Liang, W and Alford, NM and McComb, DW and Petrov, PK},
doi = {10.1021/acs.jpcc.6b03833},
journal = {Journal of Physical Chemistry C},
pages = {16681--16686},
title = {Probing the Electronic Structures of BaTiO3/SrTiO3 Multilayered Film with Spatially Resolved Electron Energy-Loss Spectroscopy},
url = {http://dx.doi.org/10.1021/acs.jpcc.6b03833},
volume = {120},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A multilayered film of BaTiO3/SrTiO3 was grown on a LaAlO3 substrate using dual-target pulsed laser deposition technique. High-resolution scanning transmission electron microscopy observations show that the nine unit-cell BaTiO3 layer and the three unit-cell SrTiO3 layer are alternatively arranged in the epitaxial film where a sharp interface exists between the BaTiO3 and SrTiO3 layers. Electron energy-loss spectroscopy analysis demonstrates that the O-K edge spectra of SrTiO3 and BaTiO3 layers are quite distinct; in particular, the energy-loss peak at 547 eV in the SrTiO3 spectrum splits into two peaks in the BaTiO3 spectrum. The multiple-scattering calculations of O-K edge spectra for BaTiO3 and SrTiO3 agree well with the experimental results. The low-energy region (<542 eV) of the O-K edge spectra for both BaTiO3 and SrTiO3 is mainly caused by the hybridization of the O 2p with Ti 3d orbitals. The splitting peaks between 542 and 552 eV in the O-K edge spectra of BaTiO3 are attributed to its complex crystal structure including two unequal oxygen sites and low site symmetry.
AU  - Liu,G
AU  - Wang,Y
AU  - Zou,B
AU  - Liang,W
AU  - Alford,NM
AU  - McComb,DW
AU  - Petrov,PK
DO  - 10.1021/acs.jpcc.6b03833
EP  - 16686
PY  - 2016///
SN  - 1932-7455
SP  - 16681
TI  - Probing the Electronic Structures of BaTiO3/SrTiO3 Multilayered Film with Spatially Resolved Electron Energy-Loss Spectroscopy
T2  - Journal of Physical Chemistry C
UR  - http://dx.doi.org/10.1021/acs.jpcc.6b03833
UR  - http://hdl.handle.net/10044/1/39870
VL  - 120
ER  -
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