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- It is named <\/b>after American physicist<\/b> Edwin H. Hall, <\/b>who first introduced the theory<\/b> to the world in 1879<\/b>.\u00a0<\/li>\n
- Hall discovered that when a conductor or semiconductor with current flowing in one direction<\/b> was introduced to a perpendicular magnetic field, a voltage could be measured <\/b>at right angles to the current path; this measurable voltage is the Hall Effect.\u00a0<\/b><\/li>\n
- How does it work?<\/b>\n
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- The Hall effect takes place when you set current flowing through a conductor, <\/b>which is a material such as copper or silver that permits electrons to flow freely <\/b>across the entire surface area.\u00a0<\/li>\n
- The electrons <\/b>begin to flow in a straight line from one side <\/b>of the conductor to the other.<\/b><\/li>\n
- I<\/b>f you were to introduce a magnetic field near the conductor, <\/b>it would disturb <\/b>the flow of the electrons due to the force applied.\u00a0<\/b><\/li>\n
- This is called Lorentz force,<\/b> which is the force on a charged particle due to electric and magnetic fields.\u00a0<\/b><\/li>\n
- The magnet\u2019s north pole pulls the negative electrons to one side<\/b> of the conductor and deflects the positive electrons to the other side <\/b>of the conductor.\u00a0<\/li>\n
- If you then put a voltage tester between the two sides, you will be given a voltage reading<\/b> because there is current between the positive and negative electrons;<\/b> by retrieving this measurable voltage, you are putting the Hall Effect principle into practice.<\/li>\n
- \u00a0In a semiconductor<\/b> such as silicon or germanium, the drift velocity of electrons <\/b>is a lot quicker<\/b> due to the material used.\u00a0<\/li>\n
- This results in a stronger Hall effect <\/b>which corresponds to a larger voltage reading <\/b>being detected and therefore a more precise reading being taken.\u00a0<\/li>\n<\/ul>\n<\/li>\n
- The Hall effect is used in several <\/b>different products, such as sensors, joysticks, and switches.\u00a0\u00a0<\/b><\/li>\n
- A Hall effect sensor<\/b> is a device to measure the magnitude of a magnetic field.<\/b>\u00a0\n
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- Its output voltage <\/b>is directly proportional to the magnetic field strength<\/b> through it.\u00a0<\/li>\n
- Hall effect sensors are used for proximity sensing, positioning, speed detection,<\/b> and current sensing applications.\u00a0<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
Recent Findings<\/b><\/p>\n
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- For a long time, people thought the Hall effect only worked when the magnetic field was applied perpendicular to the plane of the film.\u00a0<\/li>\n
- The recent findings show that a Hall response tied to magnetization can occur in more than one direction.\u00a0<\/b><\/li>\n
- That gives physicists a new way to investigate multidimensional magnetic and topological structures in condensed matter systems. <\/li>\n<\/ul>\n
News: <\/b>SD<\/b><\/a><\/p>\n
Hall Effect FAQs<\/strong><\/p>\n
Q1. What is the Hall Effect?+<\/strong><\/p>\n
- That gives physicists a new way to investigate multidimensional magnetic and topological structures in condensed matter systems. <\/li>\n<\/ul>\n
- Hall effect sensors are used for proximity sensing, positioning, speed detection,<\/b> and current sensing applications.\u00a0<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
- The electrons <\/b>begin to flow in a straight line from one side <\/b>of the conductor to the other.<\/b><\/li>\n
- Hall discovered that when a conductor or semiconductor with current flowing in one direction<\/b> was introduced to a perpendicular magnetic field, a voltage could be measured <\/b>at right angles to the current path; this measurable voltage is the Hall Effect.\u00a0<\/b><\/li>\n
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