Infrared reflectivity and lattice fundamentals in anatase TiO2

被引：286

作者：

Gonzalez, RJ ^{[1
]}

Zallen, R ^{[1
]}

Berger, H ^{[1
]}

机构：

[1] ECOLE POLYTECH FED LAUSANNE, INST PHYS APPL, CH-1015 LAUSANNE, SWITZERLAND

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.55.7014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polarization-dependent far-infrared reflectivity measurements were carried out on single crystals of anatase TiO2. The results were analyzed to yield the dielectric dispersion properties of anatase in the lattice fundamentals regime. The frequencies (in cm(-1)) of the transverse optical (TO) and longitudinal optical (LO) zone-center phonons were determined to be 367(755) for the TO (LO) of the A(2u) mode, 262(366) and 435(876) for the E(u) modes. The large TO-LO splittings were used to estimate effective charges.

引用

页码：7014 / 7017

页数：4

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