Physical properties of molybdenum monoboride: Ab-initio study

被引:6
|
作者
Rajpoot, Priyanka [1 ]
Rastogi, Anugya [1 ]
Verma, U. P. [1 ]
机构
[1] Jiwaji Univ, Sch Studies Phys, Gwalior, India
关键词
Transition metal boride; Ab initio study; structure properties; electronic properties; optical properties; thermal properties; HYDROGEN EVOLUTION; MB M; BORIDE; SOLIDS; MO; CR;
D O I
10.1080/14786435.2017.1407881
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The Ab initio investigations on structural, electronic, optical and thermal properties of MoB have been reported using full potential linearised-augmented plane wave method within the framework of density functional theory. The exchange and correlation potentials were calculated using the Perdew-Burke-Ernzerhof-Sol generalised gradient approximation. The calculated equilibrium lattice constants and cell volume are in excellent agreement with the experimental results as compared to the available theoretical data. Electronic band structure shows that MoB is metallic in nature. From the partial densities of states of MoB it has been found that major contribution on the Fermi level is due to Mo-4d states. Among the reported optical parameters the large value of reflectivity at low energy shows that MoB can be used as a coating material in IR region. Maximum absorption in extreme UV region shows that it can be used in production of electricity through solar power in space vehicles. Various thermal properties have been calculated in a wide temperature range at high pressures. Change in thermal expansion coefficient with respect to temperature shows that anharmonic effect in MoB is very weak at high temperature. The optical and thermal properties of MoB are presented for the first time in this work.
引用
收藏
页码:422 / 436
页数:15
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