The preferential growth direction of the nanorods was [ 11 - 2 ] and there were high concentration of oxygen vacancy and lattice defects in the nanorods. The formation mechanism of the nanorods and their hierarchical structures were also discussed. 所得到的纳米棒生长方向为[11?2],纳米棒中存在有高浓度的氧空位和明显的位错缺陷,讨论了纳米棒及其多级结构的形成机理。
The results showed that : ( 1 ) TiO2 promoted the sintering of chromic oxide by Ti4 + replacing Cr3 +, which restrained the formation of high volatility chrome cation through forming chrome cation vacancy, and therefore caused lattice distortion and increased Cr3 + diffusion rate. 试验结果表明:(1)TiO2通过Ti4+置换Cr3+,抑制了高挥发性铬离子的形成,产生了铬离子空位及引起晶格畸变,增大了Cr3+扩散速率,从而促进了Cr2O3材料烧结。
The other is the Li vacancy which exchanges positions with Li ions at lattice sites also along c-axis. 另一种为Li空位,也沿着c向不断和格位Li交换位置。
Pretreatment in H2 increased the conversion of NO and propene by inducing oxygen vacancy, which would be favorable for the transportation of lattice oxygen species. 催化剂在H2气氛下活化后,产生了有利于晶格氧传递的氧空缺,提高了NO和C3H6的催化转化活性。
In addition, theoretical analysis indicates that the reduction in the lattice thermal conductivity with vacancy defects can be explained by the enhanced point-defect scattering due to lattice strain. 同时理论方法还表明,空位缺陷对薄膜热导率的巨大影响归因于晶格应力的存在使点缺陷也发生散射作用的结果。