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Magnetic Materials. Pre-requisites Magnetization and Susceptibility Type of Magnetism Ferromagnetic Domains Soft and Hard Materials. Lorentz force When a charge particle moves with velocity v in the presence of a magnetic field , the Lorentz force acting on the charge is given by
MAGNETIC MATERIALS. Magnetism & Magnetic Materials. Magnetism is generally defined as that property of a material which enables it to attract pieces of iron. A material possessing this property is known as a MAGNET.
MAGNETIC MATERIALS. DKR-JIITN-PH611-MAT-SCI-2011. PARAMAGNETISM. Paramagnetism occurs in those substances where the individual atoms, ions or molecules posses a permanent magnetic dipole moments. The permanent magnetic moment results from the following contributions:.
MAGNETIC MATERIALS. Origin of Magnetism Types of Magnetism Hard and Soft Magnets. Magnetic Materials – Fundamentals and Device Applications Nicola Spaldin Cambridge University Press, Cambridge (2003). BASICS. Material in a Magnetic Field.
Magnetic Materials. Basic Magnetic Quantities. Magnetic Induction or Magnetic Flux Density B. Units: N C -1 m -1 s = Tesla (T) = Wb m -2. 2006: UNESCO Nikola Tesla Year 150 th birth Anniversary of Nikola Tesla. AC vs. DC. Ampere’s law in free space.
Magnetic Materials. Diamagnetic materials. Properties. No permanent dipole or magnetic moment is present. The external magnetic field produces induced magnetic moment. Induced magnetic moment is always in opposite direction of the applied magnetic field.
Magnetic Materials. www.phy.iitb.ac.in/~ph102. Magnetic Material. Magnetic field in materials is due to tiny electric current loops or magnetic dipoles . At normal temperatures the magnetic moments of the dipoles are randomly oriented so that the net magnetic moment is zero.
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Magnetic Materials Group. MOIF Observations of Domain Motion. In Magnetostrictive Materials Under Stress. Robert D. Shull & Alexander J. Shapiro. National Institute of Standards and Technology. Gaithersburg, Maryland. Eckhard Quandt. Center for Advanced European Studies and Research.