Multiangle Reconstruction of Domain Morphology with All-Optical Diamond Magnetometry,Physical Review Applied

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Multiangle Reconstruction of Domain Morphology with All-Optical Diamond Magnetometry
Physical Review Applied ( IF 3.8 ) Pub Date : 2021-07-22 , DOI: 10.1103/physrevapplied.16.014054
Lucio Stefan _{1,

2} , Anthony K.C. Tan ₁ , Baptiste Vindolet ₃ , Michael Högen ₁ , Dickson Thian ₄ , Hang Khume Tan ₄ , Loïc Rondin ₃ , Helena S. Knowles ₁ , Jean-François Roch ₃ , Anjan Soumyanarayanan _{4,

5} , Mete Atatüre ₁

Affiliation

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.

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