This description of elongation model is in accordance with the lattice structure distortion trend of Al2O3:Cu3+, Al2O3:Ni2+, Al2O3:Cr3+ and KZnF3:Fe3+ systems that have the same lattice structure.

• 这种伸长模型的描述与Al2O3:Cu3+、 Al2O3:Ni2+ 、Al2O3:Cr3+、KZnF3:Fe3+等具有相似晶格结构的体系中晶格结构畸变的变化趋势是一致的。