The nature of paramagnetic defects in tin (IV) oxide

被引：25
|
作者：
Ivanovskaya, M. [1 ]
Ovodok, E. [1 ]
Golovanov, V. [2 ]
机构：
[1] Belarusian State Univ, Res Inst Phys Chem Problems, Minsk 220030, BELARUS
[2] South Ukrainian Univ, UA-65008 Odessa, Ukraine
来源：
CHEMICAL PHYSICS | 2015年 / 457卷
关键词：
Electron paramagnetic resonance; Tin dioxide; D signal with g=1.8-1.9; SnO/SnO2; structure; Sn3O4/SnO2; ELECTRON-SPIN-RESONANCE; SNO2; DIOXIDE; ESR; MOSSBAUER; CENTERS; GROWTH; FILMS; ZNO;
D O I：
10.1016/j.chemphys.2015.05.023
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The nature of paramagnetic centers which are responsible for the EPR signal at g = 1.8-1.9 in tin (IV) oxide was studied. Polycrystalline SnO2 samples were obtained by sol-gel method and by thermal treatment of the precursors containing tin atoms in different oxidation states. The parameters of the EPR spectra recorded after heat treatment of the samples in air, oxygen and hydrogen atmospheres, and in vacuum were analyzed. The observed parameters of the EPR spectra do not allow to assign the paramagnetic center with g = 1.8-1.9 to Sn3+ center. The structure of the paramagnetic center attributed to the EPR signal at g = 1.8-1.9 was proposed. The proposed structure of the paramagnetic center includes a complex of oxygen vacancies at (101) plane of rutile-type SnO2 lattice. (C) 2015 Elsevier B.V. All rights reserved.
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收藏
页码：98 / 105
页数：8
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