Student Manual

Many physical substances undergo phase transitions when subject to changes in environmental
parameters. The transition of ice into water and water into steam are
familiar examples. Similarly, chromium undergoes a phase transition at a specific
temperature, called the N´eel temperature changing its magnetic order from the anti-ferromagnetic
to the para-magnet state. This magnetic reordering is accompanied
by a change in volume. In other words, the phase transition is a magneto-elastic
phenomenon. In this experiment, we study the phase transition of chromium
by directly measuring the volume change. Several important thermodynamical
concepts will also be navigated.

Software Code codes
Sample Results Voltage Vs Temperature
Voltage Vs No. of samples
Hardware Manual Precision Instrumentation Amplifier AD624
Experiment Code 2.7
Version 15 Aug 2011

Further Readings and References


Assorted Photographs

bridge chromium 1 DSCN0111 DSCN0113 setup