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Title: Growth of FePt encapsulated carbon nanotubes by thermal chemical vapor deposition

FePt encapsulated carbon nanotubes (CNTs) were grown by thermal chemical vapor deposition using an Fe/Pt bilayer catalyst. The CNTs were grown according to the base growth model. Selected area electron diffraction results revealed that the encapsulated particles were A1-FePt, L1{sub 0}-FePt, and Fe{sub 3}PtC. The crystal structures of particles found at the root parts of CNTs were not able to be identified, however. The layered structure of catalytic films seemed to be responsible for the difference in Pt content between particles found at tip and root parts of CNTs. Approximately 60% of CNTs grown at 800 °C had particles at their tip parts, compared to only 30% when the growth temperature was 700 °C, indicating that higher process temperatures promote particle encapsulation in CNTs.
Authors:
; ; ; ; ; ;  [1] ; ;  [2] ;  [3]
  1. Graduate School of Engineering, Mie University, Kurima-machiya-cho 1577, Tsu 514-8507 (Japan)
  2. Department of Quantum Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601 (Japan)
  3. Department of Electrical and Electronic Engineering, Daido University, Takiharu-cho 10-3, Minami-ku, Nagoya 457-8530 (Japan)
Publication Date:
OSTI Identifier:
22258653
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films; Journal Volume: 32; Journal Issue: 2; Other Information: (c) 2014 American Vacuum Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CARBON NANOTUBES; CATALYSTS; CHEMICAL VAPOR DEPOSITION; COMPARATIVE EVALUATIONS; CRYSTAL STRUCTURE; ELECTRON DIFFRACTION; ENCAPSULATION; FILMS; IRON; LAYERS; PARTICLES; PLATINUM