We developed an approach for determining location of intrinsic paramagnetic defects in nanodiamonds from the data of proton spin-lattice relaxation of the surface hydrogen atoms. The approach was applied to the detonation nanodiamond (DND) of the diameter of 5 nm. We found that dangling bonds with unpaired electron spins are located within the near-surface belt at the distance of 0.3–0.9 nm from the DND surface. The NMR data are compared with the results of EPR measurements.

中文翻译：

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从质子自旋晶格弛豫数据看爆轰纳米金刚石中顺磁缺陷的位置。

我们开发了一种从表面氢原子的质子自旋晶格弛豫数据确定纳米金刚石中固有顺磁缺陷位置的方法。该方法应用于直径为5 nm的爆轰纳米金刚石（DND）。我们发现，具有不成对电子自旋的悬空键位于离DND表面0.3-0.9 nm的近表面带内。将NMR数据与EPR测量结果进行比较。