Permalloy
Videos
Permalloy is a nickel–iron magnetic alloy, with about 80% nickel and 20% iron content. Invented in 1914 by physicist Gustav Elmen at Bell Telephone Laboratories, it is notable for its very high magnet
Strip of permalloy
Electrical steel
Videos
Electrical steel is speciality steel used in the cores of electromagnetic devices such as electric motors, electric generators, and transformers because it reduces power loss. It is an iron alloy with
Permalloy
…cable. After a prolonged search, permalloy was discovered in 1914 by Gustav Elmen of Bell Laboratories, who found it had higher permeability than silicon steel. Later, in 1923, he found its permeability could be greatly enhanced by heat treatment. A wrapping of permalloy tape could reportedly increase the…
Polycrystalline structure of grain oriented electrical steel after coating has been removed.