Journal of Applied Crystallography

Volume 31, Part 4 (August 1998)

laboratory notes

J. Appl. Cryst. (1998). 31, 641-643 [ doi:10.1107/S0021889898001368 ]

A temperature-gradient apparatus for the optical investigation of phase transitions in polarized light

O. Müller and M. Mühlberg

Abstract: 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 observation of phase boundaries. Some details of its application to investigating phase transitions in lead phosphate and barium calcium titanate are also given.