Structural effects and 4f-5d transition shifts induced by La-codoping in Ce-doped yttrium aluminium garnet: first principles study

This work was partly supported by a grant from Ministerio de Ciencia e Innovacion, Spain (Direccion General de Programas y Transferencia de Conocimiento MAT2008-05379/MAT). A.B.M.-G. acknowledges a contract of the program Personal Investigador en Formacio