公开(公告)号：GB2580837A

公开(公告)日：2020-07-29

申请号：GB202005840

申请日：2018-09-13

Applicant: IBM ,  RWTH AACHEN

Inventor： WABE KOELMANS ,  ABU SEBASTIAN ,  VARA JONNALAGADDA ,  MARTIN SALINGA ,  BENEDIKT KERSTING

IPC: G11C11/56 ,  H10B99/00

Abstract: The invention is notably directed to a resistive memory device comprising a control unit for controlling the resistive memory device and a plurality of memory cells. The plurality of memory cells includes a first terminal, a second terminal and a phase change segment comprising a phase-change material for storing information in a plurality of resistance states. The phase change segment is arranged between the first terminal and the second terminal. The phase change material consists of antimony. Furthermore, at least one of the dimensions of the phase change segment is smaller than 15 nanometers. Additional implementations of the resistive memory device include a related method, a related control unit, a related memory cell and a related computer program product.

公开(公告)号：GB2580837B

公开(公告)日：2021-06-30

申请号：GB202005840

申请日：2018-09-13

Applicant: IBM ,  RWTH AACHEN

Inventor： WABE KOELMANS ,  ABU SEBASTIAN ,  VARA JONNALAGADDA ,  MARTIN SALINGA ,  BENEDIKT KERSTING

IPC: G11C11/56 ,  H10B99/00 ,  H01L45/00

Abstract: The invention is directed to a resistive memory device comprising a control unit for controlling a memory cell of the memory device. The memory cell includes a first terminal, a second terminal and a phase change segment comprising a phase-change material. The phase change segment is arranged between the first terminal and the second terminal. The phase change material is antimony. The phase change segment retains an amorphous region during a write operation. The control unit, during the write operation, applies an electrical programming pulse to the terminals to cause a portion of the phase change segment to transition from a crystalline phase to an amorphous phase comprising the amorphous region. A trailing edge duration of the electrical programming pulse is adjusted based on ambient temperature to prevent re-crystallization of the amorphous region. Shorter trailing edge durations are used at increasing ambient temperatures.