ferromagnetic materials
51Dielectric — A dielectric is an electrical insulator that can be polarized by an applied electric field. When a dielectric is placed in an electric field, electric charges do not flow through the material, as in a conductor, but only slightly shift from their …
52Grinding (abrasive cutting) — Sketch of how abrasive particles in a grinding wheel remove material from a workpiece. Grinding is an abrasive machining process that uses a grinding wheel as the cutting tool. A wide variety of machines are used for grinding: Hand cranked knife… …
53Rayleigh law — The Rayleigh law describes the behaviour of ferromagnetic materials at low fields.Ferromagnetic materials consist of magnetic domains. When a small external field H is applied, domains parallel to the external field start to grow. In this region …
54Topological order — In physics, topological order is a new kind of order (a newkind of organization of particles) in a quantum state that is beyond theLandau symmetry breaking description. It cannot be described by local order parameters and long rangecorrelations.… …
55Planar Hall sensor — The planar Hall sensor [http://www.mic.dtu.dk/upload/institutter/mic/forskning/magnetic systems/reports/phd louiseejsing.pdf] is based on the planar Hall effect of ferromagnetic materials. [http://scitation.aip.org/getpdf/servlet/GetPDFServlet?fil… …
56Micromagnetics — deals with the interactions between magnetic moments on sub micrometre length scales. These are governed by several competing energy terms. Dipolar energy is the energy which causes magnets to align north to south pole. Exchange energy will… …
57Wilson , Kenneth G. — (1936–) American theoretical physicist Wilson was educated at Harvard and Cal Tech where he gained his PhD in 1969. He taught at Cornell University from 1963, serving as professor of physics there from 1970 to 1988, when he moved to a similar… …
58Neodymium magnet — Nickel plated neodymium magnet on a bracket from a hard drive. Nickel plated neodymium m …
59Magnetic anomaly detector — MAD rear boom on P 3C The SH 60B Seahawk helicopter carries …
60magnetic ceramics — Introduction oxide materials that exhibit a certain type of permanent magnetization called ferrimagnetism. Commercially prepared magnetic ceramics are used in a variety of permanent magnet, transformer, telecommunications, and information… …
