Patent ID: 7943920

Claim:
A memory device comprising: a first electrode and a second electrode; a memory element and a buffer layer located between and electrically coupled to the first and the second electrodes; the memory element comprising at least one of the following: WO x , NiO, Nb 2 O 5 , CuO 2 , Ta 2 O 5 , Al 2 O 3 , CoO, Fe 2 O 3 , HfO 2 , TiO 2 , GeTi, SnMnTe, SbTe, Pr 1-x Ca x MnO 3 , (Te—Cu/GdOX, GeSb with Ag+ or Cu + ); and the buffer layer comprising at least one of the following: WO, TiO, AlO, CuO, ZrO and Si 3 N 4 .