I wish to thank Richard P. Waiters for many helpful suggestions. I also wish to thank R. D. Govier for the x-ray diffraction analysis and J. W. Siple for the hydrogen analysis.
LiZB407 films, a promising material for surface acoustic wave devices, were prepared by the sol-gel method using metal alkoxide precursors as starting materials. The Li2B407 fitms on silicon (100) and (111) single crystals prepared from a coating solution to which acetic or hydrochloric acid was added were highly oriented along the (122) plane, whereas those without acid additive were randomly oriented. The results were interpreted based on the basic sol-gel chemistry and the lattice matching between the film and substrate. [
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