FT-IR spectroscopy of tetrahedrally coordinated impurities in sillenites

被引：0
作者：
Bandini, E
Beneventi, P
Bersani, D
Capelletti, R
Gospodinov, M
Kovacs, L
机构：
[1] INFM,I-43100 PARMA,ITALY
[2] UNIV PARMA,DEPT PHYS,I-43100 PARMA,ITALY
[3] BULGARIAN ACAD SCI,INST SOLID STATE PHYS,SOFIA 1784,BULGARIA
[4] HUNGARIAN ACAD SCI,CRYSTAL PHYS RES LAB,H-1502 BUDAPEST,HUNGARY
来源：
MIKROCHIMICA ACTA | 1997年
关键词：
impurities; vibrational modes; oxides; FTIR spectroscopy; anharmonicity;
D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
FT-IR absorption spectroscopy in the temperature range 9-300 K was used to study the vibrational modes induced by aliovalent impurities (such as P5+ and V5+) in Bi12SiO20(BSO), Bi12GeO20(BGO), and Bi12TiO20(BTO) and by traces of Ge4+ in Bi12SiO20 and of Si4+ in Bi12TiO20. Peaks due to the asymmetric F stretching mode, to its overtone, and to the combination with the symmetric A mode of the tetrahedral ImO(4) unit (Im being the impurity) were detected. Weak anharmonicity effects were displayed. The role played by the host matrix and by temperature on the peak positions was examined and discussed.
引用
收藏
页码：489 / 490
页数：2
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