Amorphous Gallium Phosphate Thin Films : Ga and O K-Edge Absorption Spectroscopy F. Tourtin, P. Armand, A. Ibanez, G. Tourillon et E. Philippot J. Phys. IV France, 7 C2 (1997) C2-975-C2-977 DOI: 10.1051/jp4:19972106