Formation and characterization of nanoparticles formed by sequential ion implantation of Au and Co into SiO2

P. Kluth; B. Hoy; B. Johannessen; S. G. Dunn; G. J. Foran; M. C. Ridgway

doi:10.1016/j.nimb.2006.12.149

Formation and characterization of nanoparticles formed by sequential ion implantation of Au and Co into SiO₂

P. Kluth^*, B. Hoy, B. Johannessen, S. G. Dunn, G. J. Foran, M. C. Ridgway

^*Corresponding author for this work

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Abstract

Nanoparticles (NPs) were formed by sequential ion implantation of Au and Co into thin SiO₂. After Au implantation and annealing, Co implantations were carried out at room temperature (RT) and 400 °C, respectively, with no subsequent annealing. The NPs were investigated by means of Rutherford backscattering spectroscopy (RBS), transmission electron microscopy (TEM) and extended X-ray absorption fine structure spectroscopy (EXAFS). TEM shows the formation of Co-Au core-shell NPs for the Co implantation at 400 °C. EXAFS measurements indicate significant strain in the NPs and a bond-length expansion of the Co-Co bonds in the NP core with a concomitant contraction of the Au-Au bonds in the Au shells. NPs are also observed by TEM for the Co implantation performed at RT, however, a lack of crystallinity is apparent from electron diffraction and EXAFS measurements.

Original language	English
Pages (from-to)	80-84
Number of pages	5
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	257
Issue number	1-2 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.nimb.2006.12.149
Publication status	Published - Apr 2007

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Kluth, P., Hoy, B., Johannessen, B., Dunn, S. G., Foran, G. J., & Ridgway, M. C. (2007). Formation and characterization of nanoparticles formed by sequential ion implantation of Au and Co into SiO₂. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 257(1-2 SPEC. ISS.), 80-84. https://doi.org/10.1016/j.nimb.2006.12.149

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title = "Formation and characterization of nanoparticles formed by sequential ion implantation of Au and Co into SiO2",

abstract = "Nanoparticles (NPs) were formed by sequential ion implantation of Au and Co into thin SiO2. After Au implantation and annealing, Co implantations were carried out at room temperature (RT) and 400 °C, respectively, with no subsequent annealing. The NPs were investigated by means of Rutherford backscattering spectroscopy (RBS), transmission electron microscopy (TEM) and extended X-ray absorption fine structure spectroscopy (EXAFS). TEM shows the formation of Co-Au core-shell NPs for the Co implantation at 400 °C. EXAFS measurements indicate significant strain in the NPs and a bond-length expansion of the Co-Co bonds in the NP core with a concomitant contraction of the Au-Au bonds in the Au shells. NPs are also observed by TEM for the Co implantation performed at RT, however, a lack of crystallinity is apparent from electron diffraction and EXAFS measurements.",

keywords = "Core-shell particles, EXAFS, Ion implantation, Metal nanoparticles",

author = "P. Kluth and B. Hoy and B. Johannessen and Dunn, {S. G.} and Foran, {G. J.} and Ridgway, {M. C.}",

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Kluth, P, Hoy, B, Johannessen, B, Dunn, SG, Foran, GJ & Ridgway, MC 2007, 'Formation and characterization of nanoparticles formed by sequential ion implantation of Au and Co into SiO₂', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 257, no. 1-2 SPEC. ISS., pp. 80-84. https://doi.org/10.1016/j.nimb.2006.12.149

Formation and characterization of nanoparticles formed by sequential ion implantation of Au and Co into SiO₂. / Kluth, P.; Hoy, B.; Johannessen, B. et al.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 257, No. 1-2 SPEC. ISS., 04.2007, p. 80-84.

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

TY - JOUR

T1 - Formation and characterization of nanoparticles formed by sequential ion implantation of Au and Co into SiO2

AU - Kluth, P.

AU - Hoy, B.

AU - Johannessen, B.

AU - Dunn, S. G.

AU - Foran, G. J.

AU - Ridgway, M. C.

PY - 2007/4

Y1 - 2007/4

N2 - Nanoparticles (NPs) were formed by sequential ion implantation of Au and Co into thin SiO2. After Au implantation and annealing, Co implantations were carried out at room temperature (RT) and 400 °C, respectively, with no subsequent annealing. The NPs were investigated by means of Rutherford backscattering spectroscopy (RBS), transmission electron microscopy (TEM) and extended X-ray absorption fine structure spectroscopy (EXAFS). TEM shows the formation of Co-Au core-shell NPs for the Co implantation at 400 °C. EXAFS measurements indicate significant strain in the NPs and a bond-length expansion of the Co-Co bonds in the NP core with a concomitant contraction of the Au-Au bonds in the Au shells. NPs are also observed by TEM for the Co implantation performed at RT, however, a lack of crystallinity is apparent from electron diffraction and EXAFS measurements.

AB - Nanoparticles (NPs) were formed by sequential ion implantation of Au and Co into thin SiO2. After Au implantation and annealing, Co implantations were carried out at room temperature (RT) and 400 °C, respectively, with no subsequent annealing. The NPs were investigated by means of Rutherford backscattering spectroscopy (RBS), transmission electron microscopy (TEM) and extended X-ray absorption fine structure spectroscopy (EXAFS). TEM shows the formation of Co-Au core-shell NPs for the Co implantation at 400 °C. EXAFS measurements indicate significant strain in the NPs and a bond-length expansion of the Co-Co bonds in the NP core with a concomitant contraction of the Au-Au bonds in the Au shells. NPs are also observed by TEM for the Co implantation performed at RT, however, a lack of crystallinity is apparent from electron diffraction and EXAFS measurements.

KW - Core-shell particles

KW - EXAFS

KW - Ion implantation

KW - Metal nanoparticles

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JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

IS - 1-2 SPEC. ISS.

ER -

Formation and characterization of nanoparticles formed by sequential ion implantation of Au and Co into SiO₂

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