纳米结构锆晶粒尺寸对费米能及费米速度的影响

Influence of Grain Size on the Fermi Energy and Fermi Velocity of Nanocrystalline Zirconium

研究纳米结构锆晶粒尺寸对晶格畸变、费米能和费米速度的影响,并建立晶格畸变、费米能、费米速度与晶粒尺寸之间的关系,计算了锆的晶格畸变率、费米能和费米速度。结果表明,锆纳米化后其晶格畸变表现为膨胀,晶格畸变随着晶粒尺寸的减小而增加,费米能和费米速度随晶粒尺寸的增加而增大。

The effects of grain size on the lattice distortion, Fermi energy and Fermi velocity of nanocrystalline zirconium are investigated in this paper. Further more, the relation of the grain sizes with the lattice distortion, Fermi energy and Fermi velocity is founded. We have calculated the rate of lattice distortion and the value of Fermi energy and Fermi velocity. These results show that the lattice distortion of nanocrystalline zirconium is expanded. The lattice distortion increases with the grain size decreasing, while the values of Fermi energy and Fermi velocity increase with the grain size increasing.