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Angular - Resolved Electron - Energy - Loss - Spectroscopy of Perovskite Manganeese Oxide

Published online by Cambridge University Press:  02 July 2020

Y. Murooka ,
N. Tanaka  and
M. Hibino
Y. Murooka
Affiliation:
Department of Electronics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
N. Tanaka
Affiliation:
Department of Applied Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
M. Hibino
Affiliation:
CIRSE, Nagoya University, Furo-cho Chikusa-ku, Nagoya, 464-8603, Japan
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Extract

Among perovskite manganese oxide systems, La1-xSrxMnO3, has been intensely investigated because of its interesting magnetic and electronic properties such as colossal magneto resistance (CMR). These properties are largely determined by the electronic structure of the valence electrons. The electronic structure of the electrons in the energy states near the Fermi level was probed by using electronic excitations of less than a few eV. Ordinarily, the information obtained about the energy states was integrated over all crystal orientations, and only few anisotropic systems were studied in terms of their orientation dependence. In the present study, we reported an orientation dependence of the plasmon dispersion, which corresponded to electronic excitations of 30eV and characterized the collective excitation of the valance electrons, on an isotropic system La,.xSrxMn03 (x=0.4) by angular-resolved electron energy loss spectroscopy (EELS).

Type
Electron Energy-Loss Spectroscopy (EELS) and Imaging
Information
Microscopy and Microanalysis , Volume 6 , Issue S2: Proceedings: Microscopy & Microanalysis 2000, Microscopy Society of America 58th Annual Meeting, Microbeam Analysis Society 34th Annual Meeting, Microscopical Society of Canada/Societe de Microscopie de Canada 27th Annual Meeting, Philadelphia, Pennsylvania August 13-17, 2000 , August 2000 , pp. 202 - 203
Copyright
Copyright © Microscopy Society of America

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References

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