利用金刚石中的氮空位中心进行多畴造岩矿物的定量矢量磁成像
Quantitative vectorial magnetic imaging of multi domain rock forming minerals using nitrogen-vacancy centers in diamond
摘要：
岩石样品的磁化强度对于古地磁研究至关重要，因为它包含了关于长期过程的宝贵地质信息，例如构造运动和海洋和大陆的形成。然而，目前的技术是有限的，在他们的能力来测量高空间分辨率和高灵敏度的定量矢量磁签名从这样的样品。因此，我们对这种磁化的理解是有限的，特别是对于多畴样品的情况。在这项工作中，我们使用一个新开发的氮空位磁显微镜，能够定量矢量磁成像与光学分辨率。我们演示了直接成像的矢量磁场的一个单一的，多域的枝晶，以及测量和计算的弱磁矩的单个颗粒在微米尺度上。这些结果为今后在古地磁测量中的应用以及对多域样品磁化的基本理解铺平了道路。
英文摘要：
Magnetization in rock samples is crucial for paleomagnetometry research, as it harbors valuable geological information on long term processes, such as tectonic movements and the formation of oceans and continents. Nevertheless, current techniques are limited in their ability to measure high spatial resolution and high-sensitivity quantitative vectorial magnetic signatures from such samples. As a result, our understanding of this magnetization is limited, specifically for the case of multi-domain samples. In this work we use a newly developed nitrogen-vacancy magnetic microscope, capable of quantitative vectorial magnetic imaging with optical resolution. We demonstrate direct imaging of the vectorial magnetic field of a single, multi-domain dendrite, as well as the measurement and calculation of the weak magnetic moments of individual grains on the micron scale. These results pave the way for future applications in paleomagnetometry, and for the fundamental understanding of magnetization in multi-domain samples.
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