Self-Limiting Size Distribution of Supported Cobalt Nanoclusters at Room Temperature

Shangjr Gwo; Chung Pin Chou; Chung Lin Wu; Yi Jen Ye; Shu Ju Tsai; Wen Chin Lin; Minn Tsong Lin

doi:10.1103/PhysRevLett.90.185506

Self-Limiting Size Distribution of Supported Cobalt Nanoclusters at Room Temperature

Shangjr Gwo^*, Chung Pin Chou, Chung Lin Wu, Yi Jen Ye, Shu Ju Tsai, Wen Chin Lin, Minn Tsong Lin

^*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

Formation of monodispersed Co nanoclusters on a single-crystal [Formula presented] dielectric film at room temperature is reported. A remarkably narrow size distribution with the average size of [Formula presented] atoms has been obtained. We have confirmed that the average size of Co nanoclusters is independent of the Co coverage and the cluster areal density linearly proportions to the Co deposition amount even at high coverages. Also, we have found that Co nanoclusters deposited on [Formula presented] are thermally stable with respect to cluster aggregation/coalescence. We propose that this novel phenomenon is a quantum size effect, manifested by local energy minima in the electronic shell structure of Co quantum dots.

Original language	English
Pages (from-to)	4
Number of pages	1
Journal	Physical Review Letters
Volume	90
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.90.185506
Publication status	Published - 2003
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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title = "Self-Limiting Size Distribution of Supported Cobalt Nanoclusters at Room Temperature",

abstract = "Formation of monodispersed Co nanoclusters on a single-crystal [Formula presented] dielectric film at room temperature is reported. A remarkably narrow size distribution with the average size of [Formula presented] atoms has been obtained. We have confirmed that the average size of Co nanoclusters is independent of the Co coverage and the cluster areal density linearly proportions to the Co deposition amount even at high coverages. Also, we have found that Co nanoclusters deposited on [Formula presented] are thermally stable with respect to cluster aggregation/coalescence. We propose that this novel phenomenon is a quantum size effect, manifested by local energy minima in the electronic shell structure of Co quantum dots.",

author = "Shangjr Gwo and Chou, {Chung Pin} and Wu, {Chung Lin} and Ye, {Yi Jen} and Tsai, {Shu Ju} and Lin, {Wen Chin} and Lin, {Minn Tsong}",

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T1 - Self-Limiting Size Distribution of Supported Cobalt Nanoclusters at Room Temperature

AU - Gwo, Shangjr

AU - Chou, Chung Pin

AU - Wu, Chung Lin

AU - Ye, Yi Jen

AU - Tsai, Shu Ju

AU - Lin, Wen Chin

AU - Lin, Minn Tsong

PY - 2003

Y1 - 2003

N2 - Formation of monodispersed Co nanoclusters on a single-crystal [Formula presented] dielectric film at room temperature is reported. A remarkably narrow size distribution with the average size of [Formula presented] atoms has been obtained. We have confirmed that the average size of Co nanoclusters is independent of the Co coverage and the cluster areal density linearly proportions to the Co deposition amount even at high coverages. Also, we have found that Co nanoclusters deposited on [Formula presented] are thermally stable with respect to cluster aggregation/coalescence. We propose that this novel phenomenon is a quantum size effect, manifested by local energy minima in the electronic shell structure of Co quantum dots.

AB - Formation of monodispersed Co nanoclusters on a single-crystal [Formula presented] dielectric film at room temperature is reported. A remarkably narrow size distribution with the average size of [Formula presented] atoms has been obtained. We have confirmed that the average size of Co nanoclusters is independent of the Co coverage and the cluster areal density linearly proportions to the Co deposition amount even at high coverages. Also, we have found that Co nanoclusters deposited on [Formula presented] are thermally stable with respect to cluster aggregation/coalescence. We propose that this novel phenomenon is a quantum size effect, manifested by local energy minima in the electronic shell structure of Co quantum dots.

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Self-Limiting Size Distribution of Supported Cobalt Nanoclusters at Room Temperature

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