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6CCVD Research

Multi-parameter study of a diamond magnetometer

At a Glance

Section titled “At a Glance”
MetadataDetails
Publication Date2025-01-07
JournalJournal of Physics D Applied Physics
AuthorsMona Jani, Reinis Lazda, Florian Gābauers, Antra Asare, Mariusz Mrózek

Abstract

Section titled “Abstract”

Abstract Negatively charged nitrogen-vacancy (NV) diamond magnetometers are promising candidates for room-temperature magnetic field sensing. However, systematic studies of magnetic field sensors that evaluate the sensitivity of NV-diamond magnetometers as a function of multiple parameters are sparse. By comparing optically detected magnetic resonance (ODMR) dips for four single-crystal diamonds, we explored how the photon shot-noise-limited sensitivity and experimental magnetic noise floor were influenced by the density of the NV centers and methods of their formation. The lowest shot-noise-limited sensitivity was 380 pT √Hz −1 ; it was significantly affected by ODMR fluorescence, contrast, and linewidth. Using dual-resonance modulation in ODMR, the experimental lowest magnetic noise floor based on power spectral density was 1.14 nT √Hz −1 . These values can be improved with an increase in laser power. This study will facilitate the selection of appropriate NV diamonds when designing magnetometers for various applications.

Tech Support

Section titled “Tech Support”

Original Source

Section titled “Original Source”

References

Section titled “References”
  1. 2015 - Nitrogen-vacancy centers in diamond for current imaging at the redistributive layer level of integrated circuits [Crossref]
  2. 2021 - Diamond magnetometry and gradiometry towards subpicotesla dc field measurement [Crossref]
  3. 2016 - Optical magnetic detection of single-neuron action potentials using quantum defects in diamond [Crossref]
  4. 2020 - Magnetometer with nitrogen-vacancy center in a bulk diamond for detecting magnetic nanoparticles in biomedical applications [Crossref]
  5. 2015 - High-resolution vector microwave magnetometry based on solid-state spins in diamond [Crossref]
  6. 2008 - High-sensitivity diamond magnetometer with nanoscale resolution [Crossref]
  7. 2023 - Sensing of magnetic-field gradients with nanodiamonds on optical glass-fiber facets [Crossref]
  8. 2020 - Diamond magnetometer enhanced by ferrite flux concentrators [Crossref]
  9. 2020 - Sensitivity optimization for NV-diamond magnetometry [Crossref]
  10. 2010 - Temperature dependence of the nitrogen-vacancy magnetic resonance in diamond [Crossref]

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