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6CCVD Research

Probing thermal conductivity of subsurface, amorphous layers in irradiated diamond

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2021-02-02
JournalJournal of Applied Physics
AuthorsEthan A. Scott, Jeffrey L. Braun, Khalid Hattar, Joshua D. Sugar, John T. Gaskins
InstitutionsUniversity of California, Los Angeles, University of Virginia
Citations15

Abstract

Section titled ā€œAbstractā€

In this study, we report on the thermal conductivity of amorphous carbon generated in diamond via nitrogen ion implantation (N3+ at 16.5 MeV). Transmission electron microscopy techniques demonstrate amorphous band formation about the longitudinal projected range, localized approximately 7 Ī¼m beneath the sample surface. While high-frequency time-domain thermoreflectance measurements provide insight into the thermal properties of the near-surface preceding the longitudinal projected range depth, a complimentary technique, steady-state thermoreflectance, is used to probe the thermal conductivity at depths which could not otherwise be resolved. Through measurements with a series of focusing objective lenses for the laser spot size, we find the thermal conductivity of the amorphous region to be approximately 1.4 W māˆ’1 Kāˆ’1, which is comparable to that measured for amorphous carbon films fabricated through other techniques.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
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