FTIR spectroscopy to monitor impurities and impurity-interactions in sillenite crystals

被引：5
|
作者：
Capelletti, R
Beneventi, P
Kovacs, L
Ruffini, A
机构：
[1] UNIV PARMA, DEPT PHYS, I-43100 PARMA, ITALY
[2] HUNGARIAN ACAD SCI, CRYSTAL PHYS RES LAB, H-1112 BUDAPEST, HUNGARY
来源：
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1997年 / 101卷 / 09期
关键词：
crystals; hydroxyl ions; spectroscopy; infrared;
D O I：
10.1002/bbpc.199700039
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
High resolution (0.04 cm(-1)) absorption spectroscopy is applied at 9 K to study the role played on the vibrational spectra by impurities (Im), as Si4+, Ge4+, P5+, V5+, Mn5+, and S6+, in Bi12SiO20 (BSO), Bi12GeO20 (BGO), and Bi12TiO20 (BTO) sillenite single crystals, Up to three-phonon transitions (overtones of the F mode and combination of F and A modes) are detected for the impurities in ImO(4) tetrahedra. Weak anharmonicity effects are monitored. The presence of additional Im impurities modify the lines due to a) the stretching of OH, typical of the undoped material, and b) the multi-phonon transitions either of the intrinsic MeO4 (Me=Si, Ge, and Ti) and of the ImO(4) tetrahedra. New bands are monitored due to the Im-OH interaction.
引用
收藏
页码：1282 / 1285
页数：4
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