PPT-Classification of Magnetic materials

The origin of magnetism lies in the orbital and spin motions of electrons and how the electrons interact with one another The best way to introduce the different types of magnetism . . HYSTERESIS LOSS. TOPICS TO BE DISCUSSED. MAGNETIC INDUCTION(. B. ). MAGNETISING FIELD(. H. ). INTENSITY OF MAGNETISATION(. I. ). CYCLE OF MAGNETISATION. ENERGY DISSIPATION DUE TO HYSTERESIS. 1. . ALL magnets have NORTH and south poles.. 2. When freely suspended, all magnets point to the north- Directional property.. NORTH . seeking. pole. SOUTH . seeking. pole. Magnetic materials.. Materials that can be attracted by a magnet. … force in . direction. … . sample volume. … magnetic . susceptibility. … magnetic field. … gradient of . the magnetic . field.  . The magnetic susceptibility . characterizes the magnetic properties of materials. . HYSTERESIS LOSS. TOPICS TO BE DISCUSSED. MAGNETIC INDUCTION(. B. ). MAGNETISING FIELD(. H. ). INTENSITY OF MAGNETISATION(. I. ). CYCLE OF MAGNETISATION. ENERGY DISSIPATION DUE TO HYSTERESIS. … force in . direction. … . sample volume. … magnetic . susceptibility. … magnetic field. … gradient of . the magnetic . field.  . The magnetic susceptibility . characterizes the magnetic properties of materials. What is a magnet?. Magnet. Permanent Magnets. By shape. Material. Temporary magnets?. Electromagnets. 1. ALL magnets have NORTH and south poles.. 2. When freely suspended, all magnets point to the north- Directional property.. Magnets attract objects made of magnetic materials. Magnetic materials include the elements . iron, nickel, cobalt, . alloys containing some of these such as . steel . and some of their compounds.. stainless steel. Beverages in aluminum and glass containers retain their carbonization (i.e., “fizz”) for several years, whereas those in two-liter plastic bottles “go flat” within a few months. .. There is a plastic . Magnetic refrigeration is a cooling technology based on the magneto caloric effect. .. Invented by Emil Warburg in . 1880. Used to attain cryogenic temperatures well below 1. o. K with the help of magnetic fields. Magnetoplasmonics . . Magnetic Materials Group. IMEM-CNR Parma. II. Magnetoplasmonics. (I) - Introduction. MAGNETO. -. PLASMONICS. Mulvaney MRS Bull (2001). Au. Magnetic. Surface plasmon. resonance. nrtypically have intrinsic coercivity less than 1000 Am-1 They are used primarily to enhance and/or channel the flux produced by an electric current The main parameter often used as a figure of meri 1. The most Important question showing the importance of these materials is:. Why all the electrical machines like (Motors, generators or transformers) are made of an . iron. core?. 2. Suppose the current increased gradually, . How . do scientists classify living organisms?. Standards:. S7L1. Obtain, evaluate, and communicate information to investigate the diversity of . living organisms . and how they can be compared scientifically.. Applications of coherent nuclear spin states are at the very heart of chemical, physical, and biological analysis of materials. . This experiment identifies an important milestone in the application of NMR spin coherence at high magnetic fields..