[1] FADEL M,AZIMM O A,OMER O A,et al..A study of some optical properties of hafnium dioxide(HFO2) thin films and their applications[J].Applied physics A.Materials Science &Processing.1998, 66;335-343.
[2] ALVISI M,GIULIOM D,MARRONES G,et al..HfO2 films with high laser damage threshold[J].Thin Solid Films,2000,358;250-258.
[4] GU P F.Thin films technology[M].Zhejiang University Press,1990:76.