Permalloy used in a sentence

Permalloy in a sentence as a noun

RAM uses tiny ferrite cores, while rope uses much larger cores consisting of a permalloy ribbon wound around a bobbin. RAM uses a separate plane of cores for each bit in the word, while all the bits of a word share the same core in a rope.

I'd check into the biocompatibility of permalloy. Nickel allergies are real and can be acquired, sometimes from rings. Might rust/discolor fingers over the long term too. Laminating a Ti strip to the permalloy might help to attenuate the situation?