MAGNETIC ELEMENTS HAVING IMPROVED SWITCHING CHARACTERISTICS AND MAGNETIC MEMORY DEVICES USING THE MAGNETIC ELEMENTS

摘要

A method and system for providing a magnetic element and a memory using the magnetic element are described. The method and system include providing a pinned layer, providing a spacer layer, and providing a free layer. The spacer layer is nonferromagnetic and resides between the pinned layer and the free layer. At least the free layer has a first end portion, a second end portion and a central portion between the first end portion and the second end portion. The first end portion, the second end portion and the central portion form an S-shape. At least one of the first end portion and the second end portion includes a curve. The magnetic element is also configured to allow the free layer to be switched at least in part due to spin transfer when a write current is passed through the magnetic element.