| Описание: | Permalloy has a high magnetic permeability, low coercivity, near zero magnetostriction, and significant anisotropic magnetoresistance. High Quality Content by WIKIPEDIA articles! Permalloy is the term for a nickel iron magnetic alloy. Generically, it refers to an alloy with about 20% iron and 80% nickel content. The low magnetostriction is critical for industrial applications, where variable stresses in thin films would otherwise cause a ruinously large variation in magnetic properties. Permalloy' s electrical resistivity generally varies within the range of 5% depending on the strength and the direction of an applied magnetic field. Permalloys typically have the face centered cubic crystal structure with a lattice constant of approximately 0. 355 nm in the vicinity of a nickel concentration of 80%. |
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Набор химика "Занимательная химия". 
Набор настольный "Виктория". 
