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Upsurge of the electrical field in the y-direction is called Hall Effect. A Hall potential difference U H is associated with the electric field across the sample of width w as follows:
His measurements of the tiny effect produced in the apparatus he used were an experimental tour de force, accomplished 18 years before the electron was discovered. Since the magnitude of the Hall voltage depends on the charge density, the voltage is grater in a semi-conductor than in a pure metal conductor.
The Hall Effect. Note: Please read the Radiation Safety Regulations at the back of this book. Objectives of the Experiment. The behaviour of the Hall voltage in a sample of doped germanium is studied in three different set-ups as follows: 1. 2. Constant magnetic field and temperature and varying control current.
Introduction. In 1879, E. H. Hall observed that when a current-carrying conductor is placed in a transverse magnetic field, the Lorentz force on the moving charges produces a potential diference perpendicular to both the magnetic field and the electric current.
In this lab, you will take measurements of Hall voltage and sample resistivity as a function of temperature (from room temperature to 120 C), as well as calculate the Hall coefficient, carrier density, and carrier mobility, in addition to determining what type of material you are measuring:
In 1879, E. H. Hall observed that when a current-carrying conductor is placed in a transverse magnetic eld, the Lorentz force on the moving charges produces a potential di erence perpendic-ular to both the magnetic eld and the electric current. This e ect is known as the Hall e ect [1].
In this experiment, the Hall Effect will be used to study some of the physics of charge transport in metal and semiconductor samples. In 1879 E. H. Hall observed that when an electrical current passes through a sample placed in a
