Particle Size and Morphology of Iridium Oxide Nanocrystals in Non-Volatile Memory Device
Resource
Materials Transactions, 52(3), 331-335
Journal
Materials Transactions
Pages
331-335
Date Issued
2011
Date
2011
Author(s)
Abstract
The aim of this work is to investigate the particle size and morphology of the nanocrystals in the non-volatile memory device by annular dark field (ADF) scanning transmission electron microscopy (STEM) and conventional transmission electron microscopy (CTEM) techniques. With respect to TEM investigation, statistical analysis on STEM image can acquire the size and density of nanocrystals more accurately than on TEM image. In addition, ADF STEM images successfully provide powerful evidences revealing the structure of IrOx nanocrystals as a core shell structure, where the inner structure is rich in Ir and the outer area is abundant in O or Al. This method could be one of the efficient way for examining the nanocrystals with a complicated cored structure.
Type
journal article