hellman-apl-64-1341

Data for reference hellman-apl-64-1341

Epitaxial Solid-Solution Films of Immiscible MgO and CaO

E. S. Hellman, E. H. Hartford

Applied Physics Letters 64, 1341 (1994).

Metastable solid-solutions in the MgO-CaO system grow readily on MgO at 300°C by molecular beam epitaxy. The solid solutions start to unmix above 500°C with an activation energy suggestive of surface diffusion. The epitaxy displays both the RHEED oscillations characteristic of layer-by-layer growth and the lattice rotations which have been related to island nucleation. The Mg_1-xCa_xO solid solutions grow despite a larger miscibility gap in this system than in any system for which epitaxial solid solutions have been grown. Epitaxial quenching of non-equilibrium solid solutions is possible because of the very low growth temperatures for rock-salt oxides.

This item is cited by the following items in the database:

ScAlMgO₄: an Oxide Substrate for GaN Epitaxy

Contributed by Eric S. Hellman from gw2.att.com. on Monday, November 20, 1995 2:52:39 PM

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