Definition of permalloy in English:


Syllabification: perm·al·loy
Pronunciation: /ˈpərməˌloi, ˌpərmˈaloi


  • An alloy of nickel and iron that is easily magnetized and demagnetized, used in electrical equipment.
    More example sentences
    • He and his colleagues deposited exquisitely thin loops of an easily magnetized nickel-iron compound called permalloy onto silicon wafers.
    • The readback portion of the head is a conventional permalloy shielded, bottom spin valve sensor.


1920s: (originally as a trademark) from permeable + alloy. See permeability ( sense 2).

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