We manufacture, export and supply Hall Effect Experiment, HEX-RM-150/ HEX-RM-150C in Roorkee, Uttarakhand, India.
Introduction
When a current-carrying conductor is placed in a magnetic field perpendicular to the current direction, a voltage develops transverse to the current. This voltage was first observed in 1879 by Edwin Hall and the effect is called Hall Effect.
The Hall effect has since led to a deeper understanding of the details of the conduction process. It can yield the density of the charge carriers as well as their sign. The hall voltage for p-carriers has opposite sign from that for n-carriers. Therefore if a semiconductor with p-type doping is gradually heated up, more and more electrons from its valence band will go to conduction band. As a result hall voltage would fall rapidly with temperature and even become zero or change sign. At the point of zero Hall Coefficient, it is possible to determine the ratio of mobilities b=me/mh . The Hall coefficient inversion is a characteristic of only p-type semiconductors.
The set-up consists of following units:
1.Hall Probe (Ge: p-type), HPP-RM-33