Now showing items 1-4 of 4

    • DC electrical conductivity of chemical vapour deposited diamond sheets: a correlation with hydrogen content and paramagnetic defects 

      SIKDER, AK; JACOB, AP; SHARDA, T; MISRA, DS; PANDEY, M; KABIRAJ, D; AVASTHI, DK (ELSEVIER SCIENCE SA, 1998)
      Diamond sheets were grown on p-type Si(100) substrates varying the deposition pressure from 20 to 140 Torr at 1163 K by a hot filament chemical vapour deposition (HFCVD) process. A mixture of 0.8% methane in balance hydrogen ...
    • Electronic sputtering of carbon allotropes 

      GHOSH, S; AVASTHI, DK; TRIPATHI, A; KABIRAJ, D; SINGH, S; MISRA, DS (ELSEVIER SCIENCE BV, 2004)
      Electronic sputtering of different allotropes of carbon (diamond, graphite, fullerene, a-C and a-C:H) are studied under 200 MeV Au15+ ion irradiation. On-line elastic recoil detection analysis (ERDA) and catcher technique ...
    • Role of rapid thermal annealing in the formation of crystalline SiGe nanoparticles 

      JOSHI, KU; KABIRAJ, D; NARSALE, AM; AVASTHI, DK; GUNDURAO, TK; WARANG, TN; KOTHARI, DC (ELSEVIER SCIENCE SA, 2009)
      In the present work, we report the formation of SiGe nanoparticles embedded in SiO(2) film by atom beam sputtering method in conjunction with Rapid Thermal Annealing (RTA). Crystalline SiGe nanoparticles in the co-sputtered ...
    • Studies of defects and impurities in diamond thin films 

      SHARDA, T; SIKDER, AK; MISRA, DS; COLLINS, AT; BHARGAVA, S; BIST, HD; VELUCHAMY, P; MINOURA, H; KABIRAJ, D; AWASTHI, DK; SELVAM, P (ELSEVIER SCIENCE SA, 1998)
      Diamond thin films were grown on silicon substrates using microwave plasma chemical vapour deposition at various microwave power densities (MPD). Three sets of the films were grown for various thicknesses. The films were ...