Optically detected magnetic resonance study of thermal effects due to absorbing environment around nitrogen-vacancy-nanodiamond powders
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2024-05-22 |
| Journal | Journal of Applied Physics |
| Authors | Mona Jani, Zuzanna Orzechowska, Mariusz MrĂłzek, Marzena MituraâNowak, Wojciech Gawlik |
| Institutions | Jagiellonian University, Institute of Nuclear Physics, Polish Academy of Sciences |
| Citations | 1 |
Abstract
Section titled âAbstractâWe implanted Fe+ ions in nanodiamond (ND) powder containing negatively charged nitrogen-vacancy (NVâ) centers and studied their Raman spectra and optically detected magnetic resonance (ODMR) in various applied magnetic fields with green light (532 nm) excitation. In Raman spectra, we observed a blue shift of the NVâ peak associated with the conversion of the electronic sp3 configuration to the disordered sp2 one typical for the carbon/graphite structure. In the ODMR spectra, we observed a red shift of the resonance position caused by local heating by an absorptive environment that recovers after annealing. To reveal the red shift mechanism in ODMR, we created a controlled absorptive environment around ND by adding iron-based Fe2O3 and graphitic sp2 powders to the ND suspension. This admixture caused a substantial increase in the observed shift proportional to the applied laser power, corresponding to an increase in the local temperature by 150-180 K. This surprisingly large shift is absent in non-irradiated NV-ND powders, is associated only with the modification of the local temperature by the absorptive environment of NV-NDs, and can be studied using ODMR signals of NVâ.
Tech Support
Section titled âTech SupportâOriginal Source
Section titled âOriginal SourceâReferences
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