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
收藏
页码：265 / 269
页数：5
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