rare-earth magnetism

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• Rare-earth magnet — Rare earth magnets are strong, permanent magnets made from alloys of rare earth elements. Rare earth magnets are substantially stronger than ferrite or alnico magnets. The magnetic field typically produced by rare earth magnets can be in excess… …   Wikipedia

• rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …   Universalium

• Magnetism — This article is about magnetic materials. For information about objects and devices that produce a magnetic field, see magnet. For fields that magnets and currents produce, see magnetic field. For other uses, see magnetism (disambiguation).… …   Wikipedia

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

• Allan Mackintosh — Allan Roy Mackintosh (* 22. Januar 1936 in Nottingham; † 20. Dezember 1995) war ein britischer Physiker. Er arbeitete hauptsächlich auf dem Gebiet der Festkörperphysik und verbrachte den Großteil seiner Forscherzeit in Dänemark. Leben Allan Roy… …   Deutsch Wikipedia

• Allan R. Mackintosh — Allan Roy Mackintosh (* 22. Januar 1936 in Nottingham; † 20. Dezember 1995) war ein britischer Physiker. Er arbeitete hauptsächlich auf dem Gebiet der Festkörperphysik und verbrachte den Großteil seiner Forscherzeit in Dänemark. Leben Allan Roy… …   Deutsch Wikipedia

• Allan Roy Mackintosh — (* 22. Januar 1936 in Nottingham; † 20. Dezember 1995) war ein britischer Physiker. Er arbeitete hauptsächlich auf dem Gebiet der Festkörperphysik und verbrachte den Großteil seiner Forscherzeit in Dänemark. Leben Allan Roy Mackintosh wurde am 22 …   Deutsch Wikipedia

• Magnet — This article is about objects and devices that produce magnetic fields. For a description of magnetic materials, see magnetism. For other uses, see Magnet (disambiguation) …   Wikipedia

• crystal — crystallike, adj. /kris tl/, n., adj., v., crystaled, crystaling or (esp. Brit.) crystalled, crystalling. n. 1. a clear, transparent mineral or glass resembling ice. 2. the transparent form of crystallized quartz. 3. Chem., Mineral. a solid body… …   Universalium

• Crystal — /kris tl/, n. 1. a city in SE Minnesota, near Minneapolis. 25,543. 2. a female given name. * * * I Any solid material whose atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Each of a crystal s… …   Universalium

• Samarium — promethium ← samarium → europium ↑ Sm ↓ …   Wikipedia