Ultimate Metastable Solubility of Boron in Diamond: Synthesis of Superhard Diamondlike BC5
Résumé
The acknowledgment to L. Dubrovinsky for microprobe analysis was an error. On page 2, the statement that ‘‘The 1:5 boron-to-carbon ratio has been additionally confirmed by electron energy loss spectroscopy (GIF2000, Gatan) and by electron microprobe analysis (Cameca SX-50, Camebax)'' should read ‘‘The 1:5 boron-to-carbon ratio has been additionally confirmed by electron energy loss spectroscopy (GIF2000, Gatan) and by x-ray electron probe microanalysis (S400, Leica/PGT Spirit).'' In the caption of Fig. 1(b), the following remark should be added: ‘‘For clarity, the lines of rhenium from a gasket and lines of sodium chloride separating the sample from diamonds have been subtracted from the diffraction patterns.'' We also take an opportunity to add a missing sentence in the paragraph devoted to the electrical properties of c-BC5 on page 4: ‘‘Recently, diamondlike BC5 has been predicted to be metallic and superconducting with a Tc of 45 K [1].'' None of the results and conclusions in the Letter is affected by this negligence.