Permalloy suna ne mai alamar kasuwanci don ma'aunin maganadisu na nickel-iron. Ana amfani da kalmar sau da yawa gabaɗaya don komawa ga duk wani gami da ke da babban ƙarfin maganadisu, ƙarancin ƙarfin ƙarfi, da ƙananan anisotropy na maganadisu. An fi amfani da shi wajen kera kayan aikin maganadisu don masu taswira, inductor, da sauran kayan lantarki. Sunan "Permalloy" ya samo asali ne daga kalmomin "na dindindin" da "alloy," yana nuna ikonsa na riƙe da halayen maganadisu na tsawon lokaci.