LEED强度的多重散射分析,进一步确定Zr与氧作用在低覆盖量下(<1ML),形成(2×2)-O结构,是氧吸附后进入Zr表面原子层下,占据八面体空位,形成有两层氧的under layer结构,Zr表面原子层有Fcc重构。分析得到的Zt-O键距为0.232nm,而Zr-Zr间距增大为0.268nm,比原来的距离增大约4.3％,这是由于氧插入的结果。 LEED intensity multiple scattering analysis to further determine the role of Zr and oxygen in the low coverage (<1ML), the formation of (2 × 2) -O structure is the oxygen into the Zr surface atomic layer, occupy the octahedral vacancies to form There are two layers of oxygen under layer structure, Zr surface atomic layer Fcc reconstruction. The Zt-O bond distance was 0.232 nm and the Zr-Zr spacing was increased to 0.268 nm, an increase of about 4.3% from the original distance due to the oxygen insertion.