Combined study of KNbO3 and KTaO3 by different techniques of photoelectron and X-ray emission spectroscopy

被引：9

作者：

Postnikov, AV ^{[1
]}

Schneider, B

Neumann, M

Hartmann, D

Hesse, H

Moewes, A

Kurmaev, EZ

Matteucci, M

机构：

[1] Univ Osnabruck, Fachbereich Phys, D-49069 Osnabruck, Germany

[2] Louisiana State Univ, Ctr Adv Microstruct & Devices, Baton Rouge, LA 70803 USA

[3] Inst Met Phys, Yekaterinburg, Russia

[4] Sincrotrone Trieste, Natl Res Council, I-34012 Trieste, Italy

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2000年 / 61卷 / 02期

基金：

俄罗斯科学基金会;

关键词：

soft X-ray emission; electronic structure;

D O I：

10.1016/S0022-3697(99)00291-7

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The new results of the experimental study of KNbO3 and KTaO3 by means of X-ray photoelectron spectroscopy, soft X-ray emission and X-ray fluorescence spectroscopy are presented. In particular, Nb M-4,M-5 spectra (5p, 4f --> 3d(5/2,3/2) transition) have been measured over a range of near-threshold excitation energies 206.5-240.6 eV, and Ta N-3 spectra (5d, 6s --> 4P(3/2) transition) over 399.4-420.4 eV at the Beamline 8.0 of the Lawrence Berkeley National Laboratory's Advance Light Source. These spectra were found to be strongly dependent on the excitation energy. Moreover, the O K alpha X-ray emission spectra in both compounds as well as the valence-band photoelectron spectra are brought to the binding energy scale and discussed in combination. The trends in the spectra are explained on the basis of first-principles band-structure calculations, with the dipole transition matrix elements taken into account. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：265 / 269

页数：5

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