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An experimental investigation of domain wall motion in polycrystalline Ni during high-rate compressive loading

By Dipankar Ghosh, Abubakarr Bah, Gregory P. Carman and Guruswami Ravichandran


This paper describes experimental data on a polycrystalline nickel subjected to compressive loads induced in a split Hopkinson pressure bar test. A perpendicular bias magnetic field with respect to the loading direction is used to orient the domains and a pick-up coil measures the magnetic response of the sample during loading. Utilizing this experimental configuration, this study investigated the coupled effects of the magnetic and mechanical fields on domain wall motion in a polycrystalline magnetostrictive material (Ni) during the high-rate elastic loading. The experimental measurements reveal that the magnitude of the stress-induced magnetization change is dependent upon bias magnetic field

Publisher: 'IOP Publishing'
Year: 2016
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