Shifts of core-level electron binding energies for SrBi2Ta2O9 nano-particles

Takada S; Kohiki S; Adachi Y; Shimizu A; Takahashi S; Mitome M; Oku M

Chemistry Letters, Vol.29, No.7, 748-749, 2000

Takada S, Kohiki S, Adachi Y, Shimizu A, Takahashi S, Mitome M, Oku M

The electron binding energies of Ta 4d(5/2) and Sr 3p(3/2) levels of SrBi2Ta2O9 nano-particles were larger by 1.2 eV than these of bulk SrBi2Ta2O9, while the Bi 4d(5/2) electron binding energy was smaller by 1.4 eV than the bulk. Charge distribution in the unit cell of the nano-particles differs from that of the bulk.