Publications

We report observation of microcrystalline interface phases at the SiO sub 2-Si(100) interface.

The structure of the Si(001)-SiO sub 2 interface has been studied using grazing incidence x-ray scattering techniques.

We have observed evidence of finite-range order in quenched crystals of nominal composition Ba sub 2 YCu sub 3 O sub (6.7).

The position of gallium atoms on a silicon (111) surface has been completely determined using the tunneling microscope and X-ray standing wave methods.

The 8X8 matrix representation of dynamical x-ray diffraction theory provides a fast, precise and easy way to compute standing wave fields from Bragg planes both parallel and oblique to a crystal su

X-ray powder patterns obtained from three different types of 35-40angstroms CdSe nanoclusters are analyzed.

X-ray diffraction studies of CeO sub 2 at room temperature on the wiggler polychromatic beam-line at CHESS have confirmed a structural phase transition from the cubic-fluorite structure to an ortho

Recent measurements have found nonclassical rotational inertia (NCRI) in solid He-4 starting at T similar to 200 mK, leading to speculation that a supersolid state may exist in these materials.

W H E N a crystalline substance is sawed, ground, lapped or polished, the crystal structure adjacent to the worked surface is distorted and ruptured.

Rotating-anode x-ray measurements on thick, free-standing films of the liquid crystal compound n-butyl 4'-n-hexyloxybiphenyl- 4-carboxylate (46OBC) were used to probe the critical behavior at the t