O. Muller et M. Muhlberg, A TEMPERATURE-GRADIENT APPARATUS FOR THE OPTICAL INVESTIGATION OF PHASE-TRANSITIONS IN POLARIZED-LIGHT, Journal of applied crystallography, 31, 1998, pp. 641-643
A versatile apparatus for optical investigations of phase transitions
in plate-like crystalline samples in adjustable temperature gradients
is described. It conveniently allows the generation, movement and obse
rvation of phase boundaries. Some details of its application to invest
igating phase transitions in lead phosphate and barium calcium titanat
e are also given.