Rare earth hexaboride nanowires: General synthetic design and analysis using atom probe tomography

Joseph R. Brewer; Robert M. Jacobberger; David R. Diercks; Chin Li Cheung

doi:10.1021/cm200258h

Rare earth hexaboride nanowires: General synthetic design and analysis using atom probe tomography

Joseph R. Brewer, Robert M. Jacobberger, David R. Diercks, Chin Li Cheung

Chemistry

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

60 Scopus citations

Abstract

A general synthetic design for a wide range of single-crystalline rare earth hexaboride nanowires (REB₆, RE = Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho) was established using palladium-nanoparticle-assisted chemical vapor deposition and examined by atom probe tomography analysis. Insights from binary phase diagrams were demonstrated to determine proper catalyst choice and vapor-liquid-solid growth conditions for this wide range of binary wire systems. High-resolution transmission electron microscopy indicated that these nanowires were single-crystalline with diameters of about 50 nm and lengths of several micrometers. Atom probe tomography analysis revealed that these nanowires were of high purity and correct stoichiometry. No detectable palladium diffusion was found beyond the first several nanometers of the catalyst nanoparticle-nanowire interface.

Original language	English (US)
Pages (from-to)	2606-2610
Number of pages	5
Journal	Chemistry of Materials
Volume	23
Issue number	10
DOIs	https://doi.org/10.1021/cm200258h
State	Published - May 24 2011

Keywords

Atom probe tomography
Nanowire
Rare earth hexaboride

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

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10.1021/cm200258h

Cite this

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title = "Rare earth hexaboride nanowires: General synthetic design and analysis using atom probe tomography",

abstract = "A general synthetic design for a wide range of single-crystalline rare earth hexaboride nanowires (REB6, RE = Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho) was established using palladium-nanoparticle-assisted chemical vapor deposition and examined by atom probe tomography analysis. Insights from binary phase diagrams were demonstrated to determine proper catalyst choice and vapor-liquid-solid growth conditions for this wide range of binary wire systems. High-resolution transmission electron microscopy indicated that these nanowires were single-crystalline with diameters of about 50 nm and lengths of several micrometers. Atom probe tomography analysis revealed that these nanowires were of high purity and correct stoichiometry. No detectable palladium diffusion was found beyond the first several nanometers of the catalyst nanoparticle-nanowire interface.",

keywords = "Atom probe tomography, Nanowire, Rare earth hexaboride",

author = "Brewer, {Joseph R.} and Jacobberger, {Robert M.} and Diercks, {David R.} and {Li Cheung}, Chin",

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T1 - Rare earth hexaboride nanowires

T2 - General synthetic design and analysis using atom probe tomography

AU - Brewer, Joseph R.

AU - Jacobberger, Robert M.

AU - Diercks, David R.

AU - Li Cheung, Chin

PY - 2011/5/24

Y1 - 2011/5/24

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AB - A general synthetic design for a wide range of single-crystalline rare earth hexaboride nanowires (REB6, RE = Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho) was established using palladium-nanoparticle-assisted chemical vapor deposition and examined by atom probe tomography analysis. Insights from binary phase diagrams were demonstrated to determine proper catalyst choice and vapor-liquid-solid growth conditions for this wide range of binary wire systems. High-resolution transmission electron microscopy indicated that these nanowires were single-crystalline with diameters of about 50 nm and lengths of several micrometers. Atom probe tomography analysis revealed that these nanowires were of high purity and correct stoichiometry. No detectable palladium diffusion was found beyond the first several nanometers of the catalyst nanoparticle-nanowire interface.

KW - Atom probe tomography

KW - Nanowire

KW - Rare earth hexaboride

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Rare earth hexaboride nanowires: General synthetic design and analysis using atom probe tomography

Abstract

Keywords

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