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Theoretical investigation on first-principles electronic and thermal properties of some CdRE intermetallics

机译:某些CdRE金属间化合物的第一性原理电子和热学性质的理论研究

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摘要

Ab initio calculation on B2-cadmium rare earth (RE), CdRE (RE=La, Ce and Pr) intermetallics has been performed at T=0 K with respect to their structural, electronic and thermal properties. The structural and electronic properties are derived using self-consistent tight binding linear muffin tin orbital method at ambient and at high pressure. Other properties like lattice parameter, bulk modulus, density of states, electronic specific heat coefficient, cohesive energy, heat of formation, Debye temperature and Grüneisen constant for CdRE are also estimated. The RE-f effect can be seen in CdPr in terms of variation in the density of states and opens a possibility of structural instability. A pressure induced variation of Debye temperature is also presented for three cadmium rare earth intermetallics.
机译:关于B2-镉稀土(RE),CdRE(RE = La,Ce和Pr)金属间化合物的从头算,其结构,电子和热学性质已在T = 0 K时进行。在室温和高压下,使用自洽的紧密结合线性松饼锡轨道方法获得结构和电子性质。还估算了其他性质,如晶格参数,体积模量,状态密度,电子比热系数,内聚能,形成热,CdRE的德拜温度和Grüneisen常数。在CdPr中可以从状态密度的变化中看到RE-f效应,并为结构不稳定提供了可能性。还介绍了三种镉稀土金属互化物的压力引起的德拜温度变化。

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