Multiangle Reconstruction of Domain Morphology with All-Optical Diamond Magnetometry
Abstract
Scanning diamond magnetometers based on the optically detected magnetic resonance of the nitrogen-vacancy center offer very high sensitivity and noninvasive imaging capabilities when the stray fields emanating from ultrathin magnetic materials are sufficiently low (less than 10 mT ). Beyond this low-field regime, the optical signal quenches and a quantitative measurement is challenging. While the field-dependent photoluminescence from the nitrogen-vacancy center can still provide qualitative information on magnetic morphology, this operation regime remains unexplored, particularly for surface magnetization larger than approximately 3 mA . Here, we introduce a multiangle reconstruction (MARE) that captures the full nanoscale domain morphology in all magnetic field regimes leading to photoluminescence quench. To demonstrate this, we use [Ir/Co/Pt]14 multilayer films with surface magnetization an order of magnitude larger than previous reports. Our approach brings noninvasive nanoscale magnetic field imaging capability of the nitrogen-vacancy center to the study of a wider pool of magnetic materials and phenomena.
- Publication:
-
Physical Review Applied
- Pub Date:
- July 2021
- DOI:
- 10.1103/PhysRevApplied.16.014054
- arXiv:
- arXiv:2101.10331
- Bibcode:
- 2021PhRvP..16a4054S
- Keywords:
-
- Condensed Matter - Mesoscale and Nanoscale Physics;
- Physics - Applied Physics;
- Physics - Instrumentation and Detectors;
- Quantum Physics
- E-Print:
- Phys. Rev. Applied 16, 014054 (2021)