Thermal and physical properties of titanium oxide at high pressure

被引：4
作者：
Arafin, Sayyadul [1 ]
Singh, Ram N. [1 ]
机构：
[1] Sultan Qaboos Univ, Coll Sci, Dept Phys, Box 36, Al Khoud 123, Oman
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2016年 / 99卷
关键词：
Thermophysical properties; Titanium oxide; High pressure; RUTILE TIO2; LATTICE-DYNAMICS; RAMAN-SPECTRUM; AB-INITIO; DEPENDENCE; TEMPERATURE; COMPRESSIBILITY; CONDUCTIVITY; VISCOSITY;
D O I：
10.1016/j.jpcs.2016.07.015
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We have investigated the pressure dependence of the thermal and physical properties of titanium oxide (rutile) by utilizing the semi-empirical relation developed following the Lindemann's melting law. Gruneisen parameter and the bulk modulus are the basic inputs of the empirical relation. The formalism has been applied to estimate the pressure dependence of melting temperature, Debye temperature, viscosity, conductivity and diffusivity of rutile. The pressure range used in the present study is 0-20 GPa. The results show that the properties of TiO2 as a function of pressure are close to linear at low pressures (P <= 6.0GPa) but starts deviating from being linear for (P > 6.OGPa). Similar trends are also exhibited for viscosity, thermal conductivity, and diffusivity. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：86 / 91
页数：6
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