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Unformatted text preview: expensive to make than today's nonvolatile Flash memory. Stuart Parkin with one of his sputtering machines used to create magnetic tunnel junctions for Magnetic RAM experiments: Click on the images to download the larger size graphics Graphic showing how magnetic tunnel junction used in Magnetic RAM differs from magnetic structure used in GMR head in disk drives. Both use the "spintronic" or "spin-polarized" effect of magnetic fields on electrons. But while the GMR head is an in-plane structure with a metallic, non-magnetic spacer layer, magnetic tunnel junctions are through-the-plane sturctures with insulating (non metalllic, non-mangetic) spacer layers: Click on the images to download the larger size graphics...
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- Spring '10
- Non-volatile memory, Random-access memory, Spintronics, RAM Types, Magnetic RAM chips