mag·ne·to·stric·tion
mag-ˌnē-tō-ˈstrik-shən
-ˌne-
: the change in the dimensions of a ferromagnetic body caused by a change in its state of magnetization
magnetostrictively
adverb
mag·ne·to·strictive
: relating to, operated by, or using magnetostriction
a magnetostrictive vibrator
… magnetostrictive emitters, in which variations in applied magnetic fields alter the dimensions of a block of ferromagnetic material such as a nickel alloy or ferrite.—David Ritchie, High Technology, March 1983
magnetostrictively
adverb
Hence, the coercive force of these powders and rocks seems mainly to be magnetostrictively controlled—presumably through internal stresses.
—J. P. Hodych, Nature, 5 Aug. 1982
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Merriam-Webster unabridged



