STRUCTURAL-ANALYSIS OF MOLTEN BISMUTH-GERMANATE COMPOUNDS

被引：8
|
作者：
TAKEDA, S [1 ]
SUGIYAMA, K [1 ]
WASEDA, Y [1 ]
机构：
[1] TOHOKU UNIV,INST ADV MAT & PROC,AOBA KU,SENDAI,MIYAGI 980,JAPAN
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1993年 / 32卷 / 12A期
关键词：
STRUCTURAL ANALYSIS; MOLTEN STATE; EDXD; ENERGY DISPERSIVE X-RAY ANALYSIS; DSC; BGO; BI4GE3O12; BI2GEO5; BI12GEO20;
D O I：
10.1143/JJAP.32.5633
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Structural analysis of molten Bi4Ge3O12(2Bi2O33GeO2), Bi2GeO5(Bi2O3GeO2) and Bil2GeO20(6Bi2O3GeO2) has been carried out using the high-temperature energy dispersive X-ray diffraction (EDXD) method. The local ordering unit structure of GeO4 tetrahedra is recognized in the bismuth germanate (BGO) melts of the three compositions. On the other hand, distorted octahedral unit structure of BiO6 is suggested in the Bi2GeO5 melt. Specific heats of these three BGO compounds have also been estimated from the differential scanning calorimetry (DSC) measurements, but no particular temperature dependence is detected after melting.
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页码：5633 / 5636
页数：4
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