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Title: Rapid Growth of Nanocrystalline Diamond on Single Crystal Diamond for Studies on Materials under Extreme Conditions

Authors:
; ; ;  [1]
  1. (UAB)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
DOE - BASIC ENERGY SCIENCESNSFDOE-NNSA
OSTI Identifier:
1419045
Resource Type:
Journal Article
Resource Relation:
Journal Name: Sci. Rep.; Journal Volume: 8; Journal Issue: 01, 2018
Country of Publication:
United States
Language:
ENGLISH

Citation Formats

Moore, Samuel L., Samudrala, Gopi K., Catledge, Shane A., and Vohra, Yogesh K. Rapid Growth of Nanocrystalline Diamond on Single Crystal Diamond for Studies on Materials under Extreme Conditions. United States: N. p., 2018. Web. doi:10.1038/s41598-018-19915-9.
Moore, Samuel L., Samudrala, Gopi K., Catledge, Shane A., & Vohra, Yogesh K. Rapid Growth of Nanocrystalline Diamond on Single Crystal Diamond for Studies on Materials under Extreme Conditions. United States. doi:10.1038/s41598-018-19915-9.
Moore, Samuel L., Samudrala, Gopi K., Catledge, Shane A., and Vohra, Yogesh K. 2018. "Rapid Growth of Nanocrystalline Diamond on Single Crystal Diamond for Studies on Materials under Extreme Conditions". United States. doi:10.1038/s41598-018-19915-9.
@article{osti_1419045,
title = {Rapid Growth of Nanocrystalline Diamond on Single Crystal Diamond for Studies on Materials under Extreme Conditions},
author = {Moore, Samuel L. and Samudrala, Gopi K. and Catledge, Shane A. and Vohra, Yogesh K.},
abstractNote = {},
doi = {10.1038/s41598-018-19915-9},
journal = {Sci. Rep.},
number = 01, 2018,
volume = 8,
place = {United States},
year = 2018,
month = 1
}
  • Early stage nucleation morphologies of spatially localized nanocrystalline diamond (NCD) micro-anvils grown on (100)-oriented single crystal diamond (SCD) anvil surfaces were analyzed and investigated for applications in high pressure studies on materials. NCD was grown on SCD using Microwave Plasma Chemical Vapor Deposition (MPCVD) for brief time intervals ranging from 1-15 minutes. Early stage film morphologies were characterized using scanning electron microscopy (SEM) and Raman spectroscopy and were compared to films grown for several hours. Rapid nucleation and growth of NCD on SCD is demonstrated without any pre-growth seeding of the substrate surface. As grown NCD diamond micro-anvils on SCDmore » were used to generate static pressure of 0.5 Terapascal (TPa) on a tungsten sample as measured by synchrotron x-ray diffraction in a diamond anvil cell. Atomic force microscopy (AFM) analysis after decompression from ultrahigh pressures showed that the detachment of the NCD stage occurred in the bulk of the SCD and not at the interface, suggesting significant adhesive bond strength between nanocrystalline and single crystal diamond.« less
  • Cited by 1
  • Cited by 1
  • Single-crystal boules of fayalite (Fe/sub 2/SiO/sub 4/) were grown in the temperature range 1165 to 1200/sup 0/C at 1 bar total pressure from high-purity oxide melts of 1.95:1 to 2.10:1 Fe:Si atom ratio. A modified Czochralski technique was used, with platinum crucibles inductively heated under oxygen fugacities, f(O/sub 2/), between 10/sup -9/ and 10/sup -12/ bar. The boules are up to 10 mm in diameter by 40 mm long and brownish-black in color. The best crystal homogeneity was obtained at growth rates of less than or equal to 3 mm/h from 2.1:1 Fe:Si melts at an f(O/sub 2/) of 10/supmore » -12/ bar at 1180 to 1185/sup 0/C. Colorimetric data indicate boule Fe/sup 3 +/ contents which increase with synthesis f(O/sub 2/) from 0.27% (10/sup -12/ bar) to 0.86% (10/sup -9/ bar). The typical orthohombic unit-cell parameters are a = 4.8214 to 4.8219, b = 10.4774 to 10.4767, and c = 6.0880 to 6.0893 A, varying slightly with synthesis f(O/sub 2/). The optical and infrared absorption spectrum is similar to that of natural fayalite, exhibiting a broad absorption band at 10,000 A with transparency maxima at 7000 and 25,000 A. Samples appear stable up to melting at approx. 1202/sup 0/C(f(O/sub 2/) approx. = 10/sup -12/ bar), but lose weight and solidify incongruently.« less