occupying the octahedral holes. Notice that the octahedral holes are along the edges (for a net of three cations) and in the center of the cube (one more cation). Thus we have four anions (FCC) and ...

For a photonic crystal (PhC) of finite size, it is important to calculate its transmission and reflection spectra. For two-dimensional (2-D) PhCs composed of a square lattice of circular cylinders, ...

IN an earlier communication 1 we stated that the X-ray powder diffraction pattern of solid deuterium chloride recorded at 118.5° K and the corresponding neutron powder diffraction pattern recorded at ...