Patent ID: 6815744
Filing Date: 2004-11-09
Classification: G11C,H01L

Abstract:
A microelectronic device for storing digital information, the device having a switchable ohmic resistance between electrodes, which said ohmic resistance is reversibly switchable between different states in response to application of different voltage pulses to the electrodes, each different state corresponding to a different value of stored information; wherein the ohmic resistance is formed from a substance comprising components Ax, By, and oxygen Oz, in which:said component A is a member of Alkaline metals (group IA), or Alkaline Earth metals (group IIA), or Rare Earth elements, or Scandium, or Yttrium; said component B is a transition metal being member of one of the groups IB to VIII, or a member of one of the groups IIIA, IVA, VA; and said substance comprising a dopant of one of or a combination of different transition metals, the total dopant amount in atomic percentage being larger than 0% and smaller than 5%.