hall effect experiment lab report pdf

1. Student Manual: This experiment introduces students to the Hall Effect which is a fundamental principle of magnetic field sensing. CODE: DKK1761 LAB. View LAB REPORT EXP2.pdf from HEAT TRANS BMM at University of Malaysia, Pahang. Hall Effect Consider the sample of p-type semiconductor with current density J x flowing in the x-direction. The latter technique utilizing the Hall effect has the advantage of requiring only a very small probe and very simple instrumentation. Students will measure Hall coefficient and carrier charge concentration in a given semiconductor crystal which will help them to understand important concepts in … Hints to the report. 9 Report 16 10 References 17 1 Hall E ect in a Semiconductor Description (SHE) 1. EXPERIMENT 14. from Hall Effect measurements, which are a basic tool for the determination of mobilities. During this laboratory, you will use a Hall probe to study the magnetic field distributions produced by both a Helmholtz coil and a solenoid. (“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. The physical mechanism of the Hall effect is discussed in Appendix I. The Hall effect is a galvanomagnetic** effect, which was observed for the first time by E. H. Hall in 1880. We will study 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. 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 1 with length L in the x direction, width w in the y direction and thickness t in the z direction. 2 1. 4, with a magnetic field H in the z direction perpendicular to contacts 1, 2 and 3, 4. 13 . Consider a simple crystal mounted as in the Fig. 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. If current is flowing through the crystal in the x 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. 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 effect was discovered by E.H. Hall in 1879. 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 Figure 1: Geometry of ﬁelds and sample in Hall eﬀect experiment. 1.1 The simple theory of the Hall eﬀect Consider a conducting slab as shown in Fig. Laboratory Manual Physics_1 Title: Hall effect 2009 r. 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