晶体场强的计算

input T2        

input T1        

input 2E        

output x        

output Dq      

output B        

output Dq/B  

output C       

output β:Mn4+

output β:Cr3+

output β:Fe3+

参考公式:

$$D q = \frac { E ( ^ { 4 } T _ { 2 } - 4 A _ { 2 } ) } { 1 0 } $$ $$x = \frac { E ( ^ { 4 } A _ { 2 } - ^ { 4 }T _ { 1 } ) - E ( ^ { 4 }A _ { 2 } - ^ { 4 } T _ { 2 } ) } { D q } $$ $$\frac { D q } { B } = \frac { 1 5 ( x - 8 ) } { ( x ^ { 2 } - 1 0 x ) } $$ $$\frac { E ( ^ { 2 } E _ { g } \rightarrow ^ { 4 } A _ { 2 g } ) } { B } = \frac { 3 . 0 5 C } { B } - \frac { 1 . 8 B } { D q } + 7 . 9 $$ $$\beta _ { 1 } = \sqrt { ( \frac { B } { B _ { 0 } } ) ^ { 2 } + ( \frac { C } { C _ { 0 } } ) ^ { 2 } } $$

参考文献:

[1]An efficient, broad-band red-emitting Li2MgTi3O8:Mn4+ phosphor for blue-converted white LEDs
[2]Highly-efficient double perovskite Mn4+-activated Gd2ZnTiO6 phosphors: A bifunctional optical sensing platform for luminescence thermometry and manometry