The monoclinic structure has two unit cells. The primative cell (P) has fractional lattice points at the corners of the cell, and the base-centered cell (C) has additional fractional lattice points at ...
At high temperatures the vanadium oxide is in a metallic phase (rutile), but below 60° is in an insulating phase (monoclinic). Typically, the excitation of the insulating phase with a pulse of ...
SMYTHITE, the rhombohedral Fe 3 S 4 first reported in a natural occurrence in 1957 (ref. 1), has been synthesized by the reaction between siderite and sodium sulphide in aqueous solution at 25° C ...