XAFS STUDIES OF OCTAHEDRAL AMORPHOUS OXIDES

被引：15

作者：

BURATTINI, E ^{[1
]}

PURANS, J ^{[1
]}

KUZMIN, A ^{[1
]}

机构：

[1] UNIV LATVIA,INST SOLID STATE PHYS,RIGA 226063,LATVIA

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1993年 / 32卷

关键词：

WO3; MOO3; V2O5; IRO2; NIO; STRUCTURE; X-RAY-ABSORPTION SPECTRA;

D O I：

10.7567/JJAPS.32S2.655

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The relationships between the structures of octahedral and tetrahedral amorphous oxides, studied by XAFS spectroscopy, are considered. It was found that a-WO3, a-MoO3, a-V2O5 thin films and glasses have strongly distorted, but well defined, oxygen octahedra, which are joined by vertices (a-WO3, a-MoO3) or by vertices and edges (a-V2O5), and form a random network. At the same time, a-IrO2 and a-NiO have less distorted oxygen octahedra, which form the rutile type and rock salt type nanocrystalline structures. The variation of the structure with the change of the metal valence is considered and the possibility of small radius polaron detection by XAFS is discussed.

引用

页码：655 / 657

页数：3