Anisotropy in extruded lanthanum borogermanate glasses? Structural study by Raman spectroscopy

被引：9

作者：

Califano, V

Champagnon, B

Fanelli, E

Pernice, P

Sigaev, V

Zakharkin, D

Sakharov, V

Baskov, P

机构：

[1] Univ Lyon 1, Lab Physicochim Mat Luminescents, UMR 5620, CNRS, F-69622 Villeurbanne, France

[2] Univ Naples Federico II, Dipartimento Ingn Mat & Prod, I-80125 Naples, Italy

[3] DI Mendeleev Chem Technol Inst, Moscow 125190, Russia

[4] All Russia Inst Chem Technol, Moscow 115509, Russia

来源：

PHILOSOPHICAL MAGAZINE | 2004年 / 84卷 / 13-16期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1080/14786430310001644422

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polarized Raman spectra of lanthanum borogermanate (LBG) glasses of different compositions, as well as of LBG glasses obtained by the hot-extrusion technique, have been obtained. In addition, the crystallization behaviour of LBG glasses of different compositions has been studied by differential thermal analysis and X-ray diffraction. Both the Raman spectra pro. le and the crystallization behaviour depend on the lanthanum - boron ratio. Polarized Raman spectra of hot-extruded samples show differences from the unextruded samples. For the first time, structural changes in glasses under hot-extrusion treatment were observed by vibrational spectroscopy.

引用

页码：1639 / 1644

页数：6

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