Vibrational Properties of Silver-doped Arsenic Chalcogenide Bulk Glasses

被引：0

作者：

Hasapis, Th. Ch. ^{[1
]}

Andrikopoulos, K. S. ^{[2
]}

Hatzikraniotis, E. ^{[1
]}

Dracopoulos, V. ^{[3
]}

Wagner, T. ^{[4
]}

Yannopoulos, S. N. ^{[3
]}

Paraskevopoulos, K. M. ^{[1
]}

机构：

[1] AU Th, Dept Phys, Thessaloniki 54124, Greece

[2] AU Th, Sch Technol, Div Phys, Thessaloniki 54124, Greece

[3] FORTH ICE HT, GR-26504 Patras, Greece

[4] Univ Pardubice, Dept Inorgan Chem, Pardubice 53210, Czech Republic

来源：

7TH INTERNATIONAL CONFERENCE OF THE BALKAN PHYSICAL UNION VOLS 1 AND 2 | 2009年 / 1203卷

关键词：

Chalcogenide glasses; phase separation; vibrational spectroscopy; effective medium theory; OPTICAL-PROPERTIES; PHASE-SEPARATION;

D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Silver-doped As33S67 and As33S33Se33 bulk glasses studied by means of Scanning Electron Microscopy (SEM) and infrared reflectivity, exhibit two-phase glasses, for a wide range of Ag concentration. Using the Effective Medium Approximation we show that the structure is actually a proper average of two components, a Ag-poor and a Ag-rich glass phase. The dominant structural unit in both phases is the pyramidal units AsX3/2 units The latter are arranged in different medium-range order motifs A detailed analysis of the reflectivity and absorption coefficient spectra made it possible to elucidate the short and medium range structural order for the Ag-poor and Ag-rich phases

引用

页码：283 / +

页数：2

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