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August 2, 2026Functional DiamondOpen Access

X-ray-based analysis of quantum-grade homoepitaxial single-crystal diamond fabricated by MPCVD

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Authors

LMLuke Chia Wei MinSTSiu Hon TsangACApoorva Chaturvedi

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Overview

Review evaluates X-ray methods for assessing quantum-grade diamond properties, indicating quality thresholds for applications.

Key Points

  • The aim is to evaluate the properties of homoepitaxial single-crystal diamond for optimal quantum applications using X-ray techniques.
  • Reviewed various X-ray methods including HRXRD, topography, RSM, XRR, GIXRD, pole figure analysis, and Bragg diffraction imaging.
  • Analyzed how MPCVD growth parameters affect X-ray signatures.
  • Cross-mapped X-ray observables to related metrics for NV coherence.
  • Achieved HRXRD rocking curve FWHM of 0.0027° for high-quality CVD films.
  • Identified dislocation densities below 10⁵ cm–² and resolved sub-nanometre roughness through synchrotron topography and XRR.
  • Established a cross-mapping protocol linking X-ray metrics to quantum-grade qualifications, differentiating T₂ from T₂*.

Cite This Study

Min et al. (2026) studied this question.

synapsesocial.com/papers/6a6eeabf1b0468a7eeab335ehttps://doi.org/10.1080/26941112.2026.2705818
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