Newly published paper on exotic antiferromagnetic spin textures imaged with ProteusQ

In late April 2022, the group of researchers led by Dr. Vincent Garcia (Unité Mixte de Physique, CNRS, Thales) published their work about the quantitative characterization of exotic antiferromagnetic spin textures in multiferroics under voltage-induced strain and electric fields using Scanning NV Magnetometry. These exciting results open the path for low-power reconfigurable antiferromagnetic spintronics.

Thanks to the excellent mechanical and thermal stability of Qnami ProteusQ, the team managed to map large domains of bismuth ferrite, identify various spin cycloid types and extract their relevant physical paramenters with unprecedented precision.  

Are you curious to read more about this breakthrough? Then, you should check the newly published Physical Review Applied paper. We cannot be more proud to see that this paper has been also selected as Editor’s suggestion.

Dr. Garcia describes the impact of Qnami ProteusQ and the support from Qnami’s team in this work:

Dr. Vincent Garcia, Unité Mixte de Physique, CNRS, Thales

“Thanks to the dedication of Dr. Hai Zhong (Qnami) on ProteusQ, and the developments of analytic models from our colleagues (L2C, Univ. Montpellier), a quantitative analysis of the physical parameters involved in the antiferromagnetic spin cycloids of BiFeO3 could be performed

The stability and easy positioning of ProteusQ opens perspectives for investigations of topological antiferromagnetic objects, and its combination with other microscopy techniques. Standard scanning probe microscopy users will find a genuine AFM matching the specifications they are used to with ProteusQ”

We congratulate Dr. Vincent Garcia and his collaborators (from Laboratoire Chrales Coulomb – Université de Montpellier and CNRS, Unité Mixte de Physique – CNRS and Thales, Quantum Sensing Lab – University of Basel and Qnami) for publishing these results in Physical Review Applied (April 26, 2022). Read more about the paper on our application page.

Qnami ProteusQ | The product on the Spotlight

Qnami ProteusQ is a complete quantum microscope system. It is the first scanning NV (nitrogen-vacancy) microscope for the analysis of magnetic materials at the atomic scale. The Qnami ProteusQ system comes with state-of-the-art electronics and software. Its flexible design allows for future adjustments and scaling, expansion and capability upgrades. The proprietary Qnami ProteusQ quantum technology provides high precision images for you to see directly the most subtle properties of your samples and the effect of microscopic changes in your design or fabrication process. 

Qnami ProteusQ

Are you interested in exploring the possibility to use Qnami ProteusQ for your own research? Contact our Technical Sales Manager, Dr. Joerg Lenz (

Scanning NV Magnetometry unlocks research potential. Will your applications be the next one?

Scanning NV Magnetometry is unlocking more and more applications in the field of nanoscale magnetism. Can yours be the next one? We can find it out together. Drop an email to our Application Scientist Dr. Peter Rickhaus (  We would be happy to talk with you.

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