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Spin Valve GMR: Resistance vs. Field Hysteresis (2D)

2D spin-valve GMR lab: a pinned/spacer/free ferromagnetic trilayer with a real two-current (Mott) resistance model, live R-H hysteresis loop, and adjustable field, GMR ratio, spacer thickness and exchange bias.

Materials Science2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

This 2D companion strips the 3D spin-valve stack down to the physics that actually drives a hard-drive read head: a pinned/spacer/free ferromagnetic trilayer rendered as a flat cross-section with electrons flowing through it, a two-current (Mott) resistance model computing spin-up and spin-down channel resistances from each layer's magnetization angle, and — the piece the 3D scene never plotted — a live resistance-vs-applied-field curve that traces out the rectangular GMR hysteresis loop as the free layer's magnetization flips at its coercive field while the pinned layer stays fixed.

⚙ Under the hood

2D spin-valve GMR lab with a real two-current (Mott) resistance model, a live R-H hysteresis loop, and adjustable applied field, GMR ratio, spacer thickness and exchange bias — the free layer's magnetization flips discretely at its coercive field and remembers its last state, producing a genuine rectangular switching loop.

giant magnetoresistancespin valvetwo-current modelhysteresisspintronicsexchange bias

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install