Particle size and morphology of iridium oxide nanocrystals in non-volatile memory device

Wei Chih Li; Writam Banerjee; Siddheswar Maikap; Jer Ren Yang

doi:10.2320/matertrans.MB201020

Particle size and morphology of iridium oxide nanocrystals in non-volatile memory device

Wei Chih Li, Writam Banerjee, Siddheswar Maikap, Jer Ren Yang^*

^*Corresponding author for this work

Department of Electronic Engineering

Research output: Contribution to journal › Journal Article › peer-review

4 Scopus citations

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 IrO., 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.

Original language	English
Pages (from-to)	331-335
Number of pages	5
Journal	Materials Transactions
Volume	52
Issue number	3
DOIs	https://doi.org/10.2320/matertrans.MB201020
State	Published - 03 2011

Keywords

Core shell structure
Iridium oxide nanocrystals
Morphology
Non-volatile memory device
Particle size
Scanning transmission electron microscopy

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10.2320/matertrans.MB201020

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title = "Particle size and morphology of iridium oxide nanocrystals in non-volatile memory device",

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 IrO., 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.",

keywords = "Core shell structure, Iridium oxide nanocrystals, Morphology, Non-volatile memory device, Particle size, Scanning transmission electron microscopy",

author = "Li, {Wei Chih} and Writam Banerjee and Siddheswar Maikap and Yang, {Jer Ren}",

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AU - Li, Wei Chih

AU - Banerjee, Writam

AU - Maikap, Siddheswar

AU - Yang, Jer Ren

PY - 2011/3

Y1 - 2011/3

N2 - 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 IrO., 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.

AB - 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 IrO., 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.

KW - Core shell structure

KW - Iridium oxide nanocrystals

KW - Morphology

KW - Non-volatile memory device

KW - Particle size

KW - Scanning transmission electron microscopy

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SP - 331

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JO - Materials Transactions

JF - Materials Transactions

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Particle size and morphology of iridium oxide nanocrystals in non-volatile memory device

Abstract

Keywords

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