  Phase change memories (PCM) is an emerging type of non-volatile memory that
has shown a strong presence in the data-storage market. This technology has
recently attracted significant research interest in the development of non-Von
Neumann computing architectures such as in-memory and neuromorphic computing.
Research in these areas has been primarily motivated by the scalability
potential of phase change materials and their compatibility with industrial
nanofabrication processes. In this work, we are presenting our development of
crossbar phase change memory arrays through the electrodeposition of GeSbTe
(GST). We show that GST can be electrodeposited in microfabricated TiN crossbar
arrays using a scalable process. Our phase switching test of the
electrodeposited materials have shown that a SET/RESET resistance ratio of 2-3
orders of magnitude is achievable with a switching endurance of around 80
cycles. These results represent the first phase switching of electrodeposited
GeSbTe in microfabricated crossbar arrays. Our work paves the way towards
developing large memory arrays involving electrodeposited materials for passive
selectors and phase switching devices. It also opens opportunities for
developing a variety of different electronic devices using electrodeposited
materials.
