Figure 6
Variation of the lattice constants of β-sulfur with temperature: (a) a (circle), b (diamond) and c (square) lattice constants; (b) monoclinic β angle; (c) unit-cell volume. The unit-cell data from the long count-time runs at 40, 75, 100, 125, 150 and 175 K are fitted to a quadratic function shown by a solid line. The extrapolated fit above 175 K is shown by a dashed line. |