Ultrananocrystalline diamond prepared by pulsed laser deposition

Takeshi Hara; Tsuyoshi Yoshitake; Tomohito Fukugawa; Hironori Kubo; Masaru Itakura; Noriyuki Kuwano; Yoshitsugu Tomokiyo; Kunihito Nagayama

doi:10.1016/j.diamond.2005.12.015

Ultrananocrystalline diamond prepared by pulsed laser deposition

Takeshi Hara, Tsuyoshi Yoshitake, Tomohito Fukugawa, Hironori Kubo, Masaru Itakura, Noriyuki Kuwano, Yoshitsugu Tomokiyo, Kunihito Nagayama

Materials Physics and Engineering

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

20 Citations (Scopus)

Abstract

Ultrananocrystalline diamond (UNCD) and sp² amorphous carbon composite thin films were grown on sapphire (0001) substrates heated to 550 °C in 4 Torr hydrogen by pulsed laser deposition (PLD) using a graphite target. Transmission electron microscopy revealed that the deposited films consisted of dense non-oriented UNCDs with diameters of approximately 5 nm. The central area of the film, corresponding to the plume center, shows the maximum film thickness and maximum density of UNCDs. In order to achieve UNCD growth by PLD, it is critical that highly energetic species arrive in high density at the substrate accompanied by sufficient ambient hydrogen.

Original language	English
Pages (from-to)	649-653
Number of pages	5
Journal	Diamond and Related Materials
Volume	15
Issue number	4-8
DOIs	https://doi.org/10.1016/j.diamond.2005.12.015
Publication status	Published - Apr 2006

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Chemistry(all)
Mechanical Engineering
Materials Chemistry
Electrical and Electronic Engineering

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10.1016/j.diamond.2005.12.015

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title = "Ultrananocrystalline diamond prepared by pulsed laser deposition",

abstract = "Ultrananocrystalline diamond (UNCD) and sp2 amorphous carbon composite thin films were grown on sapphire (0001) substrates heated to 550 °C in 4 Torr hydrogen by pulsed laser deposition (PLD) using a graphite target. Transmission electron microscopy revealed that the deposited films consisted of dense non-oriented UNCDs with diameters of approximately 5 nm. The central area of the film, corresponding to the plume center, shows the maximum film thickness and maximum density of UNCDs. In order to achieve UNCD growth by PLD, it is critical that highly energetic species arrive in high density at the substrate accompanied by sufficient ambient hydrogen.",

author = "Takeshi Hara and Tsuyoshi Yoshitake and Tomohito Fukugawa and Hironori Kubo and Masaru Itakura and Noriyuki Kuwano and Yoshitsugu Tomokiyo and Kunihito Nagayama",

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T1 - Ultrananocrystalline diamond prepared by pulsed laser deposition

AU - Hara, Takeshi

AU - Yoshitake, Tsuyoshi

AU - Fukugawa, Tomohito

AU - Kubo, Hironori

AU - Itakura, Masaru

AU - Kuwano, Noriyuki

AU - Tomokiyo, Yoshitsugu

AU - Nagayama, Kunihito

PY - 2006/4

Y1 - 2006/4

N2 - Ultrananocrystalline diamond (UNCD) and sp2 amorphous carbon composite thin films were grown on sapphire (0001) substrates heated to 550 °C in 4 Torr hydrogen by pulsed laser deposition (PLD) using a graphite target. Transmission electron microscopy revealed that the deposited films consisted of dense non-oriented UNCDs with diameters of approximately 5 nm. The central area of the film, corresponding to the plume center, shows the maximum film thickness and maximum density of UNCDs. In order to achieve UNCD growth by PLD, it is critical that highly energetic species arrive in high density at the substrate accompanied by sufficient ambient hydrogen.

AB - Ultrananocrystalline diamond (UNCD) and sp2 amorphous carbon composite thin films were grown on sapphire (0001) substrates heated to 550 °C in 4 Torr hydrogen by pulsed laser deposition (PLD) using a graphite target. Transmission electron microscopy revealed that the deposited films consisted of dense non-oriented UNCDs with diameters of approximately 5 nm. The central area of the film, corresponding to the plume center, shows the maximum film thickness and maximum density of UNCDs. In order to achieve UNCD growth by PLD, it is critical that highly energetic species arrive in high density at the substrate accompanied by sufficient ambient hydrogen.

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ER -

Ultrananocrystalline diamond prepared by pulsed laser deposition

Abstract

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