Characterization of boron-doped diamonds using 11B high-resolution NMR at high magnetic fields

M. Murakami*, T. Shimizu, M. Tansho, Y. Takano, S. Ishii, E. A. Ekimov, V. A. Sidorov, H. Sumiya, H. Kawarada, K. Takegoshi


研究成果: Article査読

5 被引用数 (Scopus)


11B static/magic-angle spinning (MAS) NMR experiments are applied to four different B-doped diamond samples prepared by either high-pressure and high-temperature (HPHT) or CVD methods with various starting materials. Application of MAS enhances the spectral resolution appreciably and differences of the four B-doped diamond samples are well reflected in the corresponding MAS spectra. From the comparison among the MAS spectra, and also their dependences on the magnetic-field and the pulse-flip angle, it is suggested that at least four kinds of boron including two kinds of impurities exist in B-doped diamond. We further examine 11B spin-lattice relaxation times (T1) for the four components and find that one of them is extremely short (ca. 500 ms) while others are in the range of several seconds. Relation between the component having the short T1 and the super conducting transition temperature (Tc) value is suggested.

ジャーナルDiamond and Related Materials
出版ステータスPublished - 2008 11月

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 化学 (全般)
  • 機械工学
  • 材料化学
  • 電子工学および電気工学


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