Abstract :
Spin-transfer-torque MRAM could edge out some mainstream memories. The read head of a hard-disk drive might seem an unlikely place to hunt for the future of memory technology. But TDK-Headway Technologies, in Milpitas, Calif., is betting that the lowly magnetic tunnel junction-the device it makes to read data off hard-disk platters-could be redesigned and repackaged to create a new way of storing information.
