High quality epitaxial layers of monocrystalline materials (26) can be
grown overlying monocrystalline substrates (22) such as large silicon wafers
by forming a compliant substrate for growing the monocrystalline layers. An accommodating
buffer layer (24) comprises a layer of monocrystalline oxide spaced apart
from a silicon wafer by an amorphous interface layer (28) of silicon oxide.
The amorphous interface layer dissipates strain and permits the growth of a high
quality monocrystalline oxide accommodating buffer layer. Any lattice mismatch
between the accommodating buffer layer and the underlying silicon substrate is
taken care of by the amorphous interface layer. In addition, formation of a compliant
substrate may include utilizing surfactant enhanced epitaxy and epitaxial growth
of single crystal silicon onto single crystal oxide materials. A microresonator
device is formed overlying the monocrystalline substrate. Portions or an entirety
of the microresonator device can also overly the accommodating buffer layer, or
the monocrystalline material layer.