Encapsulation of segmented Pd-Co nanocomposites into vertically aligned carbon nanotubes by plasma-hydrogen-induced demixing

Takeshi Fujita; Yasuhiko Hayashi; Tomoharu Tokunaga; T. Butler; N. L. Rupesinghe; K. B.K. Teo; G. A.J. Amaratunga

doi:10.1063/1.2718268

Encapsulation of segmented Pd-Co nanocomposites into vertically aligned carbon nanotubes by plasma-hydrogen-induced demixing

Takeshi Fujita, Yasuhiko Hayashi, Tomoharu Tokunaga, T. Butler, N. L. Rupesinghe, K. B.K. Teo, G. A.J. Amaratunga

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

10 Citations (Scopus)

Abstract

Vertically aligned carbon nanotubes (VA-CNTs) filled with Pd-Co nanocomposites on an Si substrate have been synthesized by microwave plasma-enhanced chemical vapor deposition. It was confirmed that adjacent Pd-Co nanocomposites in the VA-CNTs were compositionally separated. Most CNTs contained Co pillars on top; however, Pd pillars were rarely present. The strong magnetic induction from an individual Co pillar was revealed by electron holography. The simultaneous phenomenon of the demixing by plasma hydrogen irradiation and the preferential encapsulation into CNTs realized the unique Pd-Co nanocomposites.

Original language	English
Article number	133116
Journal	Applied Physics Letters
Volume	90
Issue number	13
DOIs	https://doi.org/10.1063/1.2718268
Publication status	Published - 2007
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2718268

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title = "Encapsulation of segmented Pd-Co nanocomposites into vertically aligned carbon nanotubes by plasma-hydrogen-induced demixing",

abstract = "Vertically aligned carbon nanotubes (VA-CNTs) filled with Pd-Co nanocomposites on an Si substrate have been synthesized by microwave plasma-enhanced chemical vapor deposition. It was confirmed that adjacent Pd-Co nanocomposites in the VA-CNTs were compositionally separated. Most CNTs contained Co pillars on top; however, Pd pillars were rarely present. The strong magnetic induction from an individual Co pillar was revealed by electron holography. The simultaneous phenomenon of the demixing by plasma hydrogen irradiation and the preferential encapsulation into CNTs realized the unique Pd-Co nanocomposites.",

author = "Takeshi Fujita and Yasuhiko Hayashi and Tomoharu Tokunaga and T. Butler and Rupesinghe, {N. L.} and Teo, {K. B.K.} and Amaratunga, {G. A.J.}",

note = "Funding Information: The authors would like to thank Professor M. R. McCartney for her valuable comments. This study was supported by the JSPS Postdoctoral Fellowship for Research Abroad and a Grant-in-Aid for Scientific Research (Houga-16651065). The authors gratefully acknowledge the use of facilities in the John M. Cowley Center for High Resolution Electron Microscopy at Arizona State University.",

year = "2007",

doi = "10.1063/1.2718268",

language = "English",

volume = "90",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

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T1 - Encapsulation of segmented Pd-Co nanocomposites into vertically aligned carbon nanotubes by plasma-hydrogen-induced demixing

AU - Fujita, Takeshi

AU - Hayashi, Yasuhiko

AU - Tokunaga, Tomoharu

AU - Butler, T.

AU - Rupesinghe, N. L.

AU - Teo, K. B.K.

AU - Amaratunga, G. A.J.

N1 - Funding Information: The authors would like to thank Professor M. R. McCartney for her valuable comments. This study was supported by the JSPS Postdoctoral Fellowship for Research Abroad and a Grant-in-Aid for Scientific Research (Houga-16651065). The authors gratefully acknowledge the use of facilities in the John M. Cowley Center for High Resolution Electron Microscopy at Arizona State University.

PY - 2007

Y1 - 2007

N2 - Vertically aligned carbon nanotubes (VA-CNTs) filled with Pd-Co nanocomposites on an Si substrate have been synthesized by microwave plasma-enhanced chemical vapor deposition. It was confirmed that adjacent Pd-Co nanocomposites in the VA-CNTs were compositionally separated. Most CNTs contained Co pillars on top; however, Pd pillars were rarely present. The strong magnetic induction from an individual Co pillar was revealed by electron holography. The simultaneous phenomenon of the demixing by plasma hydrogen irradiation and the preferential encapsulation into CNTs realized the unique Pd-Co nanocomposites.

AB - Vertically aligned carbon nanotubes (VA-CNTs) filled with Pd-Co nanocomposites on an Si substrate have been synthesized by microwave plasma-enhanced chemical vapor deposition. It was confirmed that adjacent Pd-Co nanocomposites in the VA-CNTs were compositionally separated. Most CNTs contained Co pillars on top; however, Pd pillars were rarely present. The strong magnetic induction from an individual Co pillar was revealed by electron holography. The simultaneous phenomenon of the demixing by plasma hydrogen irradiation and the preferential encapsulation into CNTs realized the unique Pd-Co nanocomposites.

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DO - 10.1063/1.2718268

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ER -

Encapsulation of segmented Pd-Co nanocomposites into vertically aligned carbon nanotubes by plasma-hydrogen-induced demixing

Abstract

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