Solid-state epitaxial growth has been demonstrated by forming a thin film of an alumina sol on a single-crystal alumina and firing. Single-crystal and polycrystalline alumina were used here as substrates upon which boehmite sol was deposited by spin coating. The substrates were then dried and fired and characterized by powder X-ray diffraction and scanning electron microscopy. Films on sapphire single crystals showed highly oriented growth while the films on polycrystalline alumina substrates showed random orientation.
All Science Journal Classification (ASJC) codes
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering