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Probing local order in (Ga,Mn)N alloys by X-ray absorption spectroscopy

被引：18
作者：
Bacewicz, R
Filipowicz, J
Podsiadlo, S
Szyszko, T
Kaminski, M
机构：
[1] Warsaw Univ Technol, Fac Phys, PL-00662 Warsaw, Poland
[2] Warsaw Univ Technol, Fac Chem, PL-00662 Warsaw, Poland
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2003年 / 64卷 / 9-10期
关键词：
semiconductors;
D O I：
10.1016/S0022-3697(03)00149-5
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
X-ray absorption spectroscopy has been used to study the local structure of Mn atoms in Ga0.952Mn0.048N crystals. Mn Kedge absorption spectra have been analyzed in both X-ray near-edge structure and extended X-ray absorption fine structure ranges. Modelling of the spectra has been done using real-space multiple-scattering calculations (FEFF 8 code). The substitutional model with Mn on the Ga site best describes the data. The Mn-N distance is 0.12 Angstrom longer than the Ga-N distance in GaN, and the second-shell distance (Mn-Ga) is 0.02 Angstrom longer than Ga-Ga distance in GaN. Disorder in the second coordination shell is identified by Debye-Waller factor analysis. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1469 / 1472
页数：4
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