SIMS study of erbium diffusion in lithium niobate crystals
F. Caccavale*, F. Segato*, I. Mansour*, J.M. Almeida+, A.P. Leite+
(*Università di Padova, +Universidade do Porto)
A systematic investigation of erbium diffusion in lithium niobate (LiNbO₃) crystal as a function of crystal cut direction, diffusion process parameters (temperature and time) and initial film thickness is reported. Depth concentration profiles of erbium are obtained by secondary-ion-mass spectrometry. Combining experimental data with diffusion theory, the relevant diffusion parameters are derived. Diffusion from an infinite source of erbium ions is studied to evaluate the solid solubility lower limit of Er in LiNbO₃. Thin film diffusion regime, with complete depletion of ion source, is also investigated. A comparison of Er diffusion with Er/Ti co-diffusion in LiNbO₃ crystals is reported.
Keywords: optical materials; diffusion; secondary ion mass spectroscopy (SIMS)
Order No.: JA806-033 © 1998 MRS

Go to June 1998 Table of Contents

Home • News • Society Information • What's New • Site Map • Comments • Search Contacts • MRS Meetings • Membership • MRS Publications • Marketing Opportunities Copyright©1995-2004 Materials Research Society 506 Keystone Drive Warrendale PA 15086-7573 USA Phone: 724.779.3003, Fax: 724.779.8313 General Information: Web site comments/questions: