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Microsc. Microanal. Microstruct.
Volume 6, Number 2, April 1995
Page(s) 237 - 248
Microsc. Microanal. Microstruct. 6, 237-248 (1995)
DOI: 10.1051/mmm:1995120

HRTEM Studies of the Epitaxial Growth of Pd Particles (1-6 nm) on ZnO Micro-Prisms

Suzanne Giorgio, Claude R. Henry et Claude Chapon

CRMC2-CNRS, Campus de Luminy, Case 913,13288 Marseille Cedex 9, France

Pd particles (1-6 nm) were grown under UHV conditions from a Knudsen cell, on small ZnO prisms in situ prepared in a controlled atmosphere. 3-D Pd particles epitaxially oriented on the ZnO faces were observed by HRTEM, both in top view and in profile view on the lateral (10.0) faces of the ZnO prisms. The epitaxial relations were determined: $\rm (211)_{Pd} \parallel
(10.0)_{ZnO}$ and $\rm [011]_{Pd}\parallel [001]_{ZnO}$. From the HRTEM observations of the single ZnO prisms and the tetrapods twins, the precise structure of the central ZnO nucleus was also evidenced.

8110B - Growth from vapor.
8107B - Nanocrystalline materials.
6855J - Structure and morphology; thickness; crystalline orientation and texture.

Key words
Experimental study -- Crystal growth from vapors -- Ultrahigh vacuum -- Vapor condensation -- Particles -- Palladium -- Catalysts -- TEM -- High-resolution methods -- Orientation relation -- Crystal orientation -- Heteroepitaxy -- Zinc oxides -- Binary compounds -- Surfaces -- Interfaces -- Condensed matter physics -- Materials science -- Physics -- Metals -- Metallurgy -- Condensed state physics -- Transition elements -- Inorganic compounds -- Transition element compounds

© EDP Sciences 1995