By Evjen crystal cell, the calculation formula about Madelung constant for the two-dimensional trigonal ioncrystal was deduced.
采用埃夫琴晶胞推导了计算二维三角离子晶体的马德隆常数的通项公式。
2
Transition metal nitrides belong to a class of interstitial compounds, have the properties of covalence compound, ioncrystal and transitional metals.
过渡金属氮化物是一类金属间充型化合物，兼具有共价化合物、离子晶体和过渡金属的性质。
3
Ion beam etching (IBE) was applied to treat the as-polished surfaces of a CLBO crystal with varying in rotation speed of clamp, etching times and incidence angles.