公开(公告)号：EP3394322A1

公开(公告)日：2018-10-31

申请号：EP16813329.6

申请日：2016-12-06

申请人： Element Six Technologies Limited ,  Element Six Technologies US Corporation ,  Lew, Wilbur ,  Bruce, Gregory Scott

发明人： LEW, Wilbur ,  BRUCE, Gregory Scott ,  EDMONDS, Andrew Mark ,  MARKHAM, Matthew Lee ,  STACEY, Alastair Douglas ,  DHILLON, Harpreet Kaur

IPC分类号： C30B25/02 ,  C30B29/04 ,  C30B33/04

CPC分类号： C30B29/04 ,  C30B25/02 ,  C30B33/04

摘要： A single crystal diamond material comprising: neutral nitrogen-vacancy defects (NV0); negatively charged nitrogen-vacancy defects (NV-); and single substitutional nitrogen defects (Ns) which transfer their charge to the neutral nitrogen- vacancy defects (NV0) to convert them into the negatively charged nitrogen-vacancy defects (NV ), characterized in that the single crystal diamond material has a magnetometry figure of merit (FOM) of at least 2, wherein the magnetometry figure of merit is defined by (I) where R is a ratio of concentrations of negatively charged nitrogen-vacancy defects to neutral nitrogen-vacancy defects ([NV-]/[NV0]), [NV- ] is the concentration of negatively charged nitrogen- vacancy defects measured in parts-per-million (ppm) atoms of the single crystal diamond material, [NV0] is a concentration of neutral nitrogen-vacancy defects measured in parts-per-million (ppm) atoms of the single crystal diamond material, and T2' is a decoherence time of the NV- defects, where T2' is T2* for DC magnetometry or T2 for AC magnetometry.