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¡°The longer-wavelength emission observed in cerium-doped ¦Á-SiAlON is due to the nephelauxetic effect and the increase of the ligand-field splitting of the 5d band, because the coordination of Ce3+ is enriched in nitrogen.¡±

1.ΪʲôCe3+ enriched in nitrogen »áµ¼ÖÂligand-field splitting of the 5d band?
2.nephelauxetic effect ÈçºÎʹcerium-doped ¦Á-SiAlON·¢É䳤¹âѧ²¨£¿
3.the ligand-field splitting of the 5d bandÊÇÖ¸5dÓÉʲô״̬±äÖÁʲô״̬£¿
4.the ligand-field splitting of the 5d bandÈçºÎʹcerium-doped ¦Á-SiAlON·¢É䳤¹âѧ²¨£¿

[ Last edited by SICCSU on 2010-10-27 at 19:44 ]
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