2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/222459We studied magnetization dynamics of a geometrically confined domain wall under dc current by solving simultaneously the Landau-Lifshitz-Gilbert equation and diffusion equation for spin accumulation. We showed that the oscillation motion of the domain wall is driven by the spin-transfer torque and the dc current is converted to the ac voltage signal. The results means that the geometrically confined domain wall is applicable as a source of microwave oscillator.3 pages, 3 figuresMesoscale and Nanoscale Physicstext