Concentration-dependent deuterium diffusion in diamondlike carbon films

T. Ahlgren; E. Vainonen; Jari Likonen; J. Keinonen

doi:10.1103/PhysRevB.57.9723

Concentration-dependent deuterium diffusion in diamondlike carbon films

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

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

7 Citations (Scopus)

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 language	English
Pages (from-to)	9723-9726
Journal	Physical Review B: Condensed Matter and Materials Physics
Volume	57
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.57.9723
Publication status	Published - 1998
MoE publication type	A1 Journal article-refereed

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Ahlgren, T., Vainonen, E., Likonen, J., & Keinonen, J. (1998). Concentration-dependent deuterium diffusion in diamondlike carbon films. Physical Review B: Condensed Matter and Materials Physics, 57(16), 9723-9726. https://doi.org/10.1103/PhysRevB.57.9723

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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.",

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AU - Vainonen, E.

AU - Likonen, Jari

AU - Keinonen, J.

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PY - 1998

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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.

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DO - 10.1103/PhysRevB.57.9723

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