The Hall Effect C1 Head of Experiment: Zulfikar Najmudin The following experiment guide is NOT intended to be a step -by-step manual for the experiment but rather provides an overall introduction to the experiment and outlines the important tasks that need to be performed in order to complete the experiment. Laboratory Manual Physics_1 Title: Hall effect 2009 r. Experiment No. 2 1. The effect was discovered by E.H. Hall in 1879. EXPERIMENT 14. The physical mechanism of the Hall effect is discussed in Appendix I. View LAB REPORT EXP2.pdf from HEAT TRANS BMM at University of Malaysia, Pahang. 1.1 The simple theory of the Hall effect Consider a conducting slab as shown in Fig. We will study The magnetic force on the carriers is E e (v H)m = × and is compensated by the Hall field F = e Eh h, where v is the drift velocity of the carriers.Assuming the direction of various vectors as before × v H = E h From simple reasoning, the current density J is the charge q multiplied by the number of carriers traversing unit area in unit time, which is equivalent to the carrier Consider a simple crystal mounted as in the Fig. In the presence of a magnetic field B 0 along the z-direction, the holes will experience a force (the Lorentz force) driving them towards the bottom of the sample as shown in Figure 1. from Hall Effect measurements, which are a basic tool for the determination of mobilities. NAME: MASS & HEAT TRANSFER LAB 2017/2018 Semester II Title of Experiment : EFFECT … 1. Hall Effect Consider the sample of p-type semiconductor with current density J x flowing in the x-direction. (“Hall effect Lab Report Example | Topics and Well Written Essays - 1000 words”, n.d.) ... Should this Ore be mined Introduction Prior to working on the lab experiment, various perceptions should be comprehended such asspectroscopy method utilized in the lab. 4, with a magnetic field H in the z direction perpendicular to contacts 1, 2 and 3, 4. The latter technique utilizing the Hall effect has the advantage of requiring only a very small probe and very simple instrumentation. This effect consists in the appearance of an electric field called Hall field EH r, due to the deviation of the charge carrier trajectories by an external magnetic field. During this laboratory, you will use a Hall probe to study the magnetic field distributions produced by both a Helmholtz coil and a solenoid. The idea of Hall effect Electron velocity vd is taken to vary linearly with the field Ex: vd =µEx which is only true under ohmic condition. The Hall effect is a galvanomagnetic** effect, which was observed for the first time by E. H. Hall in 1880. Hints to the report. 9 Report 16 10 References 17 1 Hall E ect in a Semiconductor Description (SHE) 1. HALL EFFECT AND RESISTIVITY MEASUREMENTS IN DOPED GAAS 5 14.4 The Experiment 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 coe cient, carrier If current is flowing through the crystal in the x Figure 1: Geometry of fields and sample in Hall effect experiment. Note that there is NO eating or drinking in the 111-Lab anywhere, except in rooms 282 ... sheet, discuss the experiment and pre-lab questions and answers with any faculty member or GSI, and receive their signature. 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