Concentration-dependent deuterium diffusion in diamondlike carbon films

T. Ahlgren (Corresponding Author), E. Vainonen, Jari Likonen, J. Keinonen

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Diffusion of deuterium in diamondlike carbon films has been studied. The deuterium concentration profiles in D+-ion-implanted films were measured by secondary-ion-mass spectrometry. A model is proposed to describe the experimental depth profiles. In this model it was assumed that atomic D is the diffusing species, whereas D in clusters is immobile. The results show that the concentration of D clusters relative to the total D concentration increases when the total D concentration decreases, leading to a concentration-dependent diffusion. The diffusion coefficients obtained for atomic D resulted in an activation energy of 2.9±0.1 eV. The solid solubility of D was observed to decrease with increasing temperature.
Original languageEnglish
Pages (from-to)9723-9726
JournalPhysical Review B: Condensed Matter and Materials Physics
Volume57
Issue number16
DOIs
Publication statusPublished - 1998
MoE publication typeA1 Journal article-refereed

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Deuterium
Carbon films
deuterium
carbon
Secondary ion mass spectrometry
Solubility
Activation energy
Ions
profiles
secondary ion mass spectrometry
solubility
diffusion coefficient
activation energy
Temperature
ions
temperature

Cite this

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title = "Concentration-dependent deuterium diffusion in diamondlike carbon films",
abstract = "Diffusion of deuterium in diamondlike carbon films has been studied. The deuterium concentration profiles in D+-ion-implanted films were measured by secondary-ion-mass spectrometry. A model is proposed to describe the experimental depth profiles. In this model it was assumed that atomic D is the diffusing species, whereas D in clusters is immobile. The results show that the concentration of D clusters relative to the total D concentration increases when the total D concentration decreases, leading to a concentration-dependent diffusion. The diffusion coefficients obtained for atomic D resulted in an activation energy of 2.9±0.1 eV. The solid solubility of D was observed to decrease with increasing temperature.",
author = "T. Ahlgren and E. Vainonen and Jari Likonen and J. Keinonen",
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year = "1998",
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language = "English",
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Concentration-dependent deuterium diffusion in diamondlike carbon films. / Ahlgren, T. (Corresponding Author); Vainonen, E.; Likonen, Jari; Keinonen, J.

In: Physical Review B: Condensed Matter and Materials Physics, Vol. 57, No. 16, 1998, p. 9723-9726.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Concentration-dependent deuterium diffusion in diamondlike carbon films

AU - Ahlgren, T.

AU - Vainonen, E.

AU - Likonen, Jari

AU - Keinonen, J.

N1 - Project code: KET41481

PY - 1998

Y1 - 1998

N2 - Diffusion of deuterium in diamondlike carbon films has been studied. The deuterium concentration profiles in D+-ion-implanted films were measured by secondary-ion-mass spectrometry. A model is proposed to describe the experimental depth profiles. In this model it was assumed that atomic D is the diffusing species, whereas D in clusters is immobile. The results show that the concentration of D clusters relative to the total D concentration increases when the total D concentration decreases, leading to a concentration-dependent diffusion. The diffusion coefficients obtained for atomic D resulted in an activation energy of 2.9±0.1 eV. The solid solubility of D was observed to decrease with increasing temperature.

AB - Diffusion of deuterium in diamondlike carbon films has been studied. The deuterium concentration profiles in D+-ion-implanted films were measured by secondary-ion-mass spectrometry. A model is proposed to describe the experimental depth profiles. In this model it was assumed that atomic D is the diffusing species, whereas D in clusters is immobile. The results show that the concentration of D clusters relative to the total D concentration increases when the total D concentration decreases, leading to a concentration-dependent diffusion. The diffusion coefficients obtained for atomic D resulted in an activation energy of 2.9±0.1 eV. The solid solubility of D was observed to decrease with increasing temperature.

U2 - 10.1103/PhysRevB.57.9723

DO - 10.1103/PhysRevB.57.9723

M3 - Article

VL - 57

SP - 9723

EP - 9726

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 16

ER -