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Iikubo, Satoshi; Koyanaka, Hideki*; Takeuchi, Ken*; Kohara, Shinji*; Loong, C.-K.*; Kodama, Katsuaki; Shamoto, Shinichi
no journal, ,
The crystal structure of a nano-manganese oxide, which has high performance as gold adsorbent from seawater has been determined by using the atomic pair distribution function analysis of X-ray and neutron diffraction data. The results complementarily show that the nano-manganese oxide consists mainly of R-MnO
.
by traveling pulsating-wave of in-melt in transition metal-fullerene compoundsSakai, Seiji; Naramoto, Hiroshi; Rikukawa, Atsushi*; Narumi, Kazumasa; Tanimoto, Hisanori*
no journal, ,
no abstracts in English
Kodama, Katsuaki; Iikubo, Satoshi; Taguchi, Tomitsugu; Shamoto, Shinichi
no journal, ,
The finite size effects of the nanoparticles to the atomic pair distribution functions (PDF) are discussed by calculating the radial distribution functions (RDF) on nanoparticles with various shapes, assuming continua. The formulas of PDF analysis which takes account of such effects are presented, and it is shown that they can reproduce the experimental data.
nanotubesTaguchi, Tomitsugu; Igawa, Naoki; Yamamoto, Hiroyuki; Shamoto, Shinichi
no journal, ,
Single-phase SiC nanotubes were succeeded in synthesized by the reaction of carbon nanotubes with Si powder at 1200 
C for 100 h. The X-ray diffraction patterns indicate that most of the carbon nanotubes reacted with Si at 1200 C for 100 h were transformed to SiC. The results of TEM observation revealed that single-phase SiC nanotubes as well as C-SiC coaxial nanotubes, which are carbon nanotubes sheathed with SiC layer, were synthesized by reacting for 100 h. Furthermore, SiC-SiO nanotubes were succeeded in synthesized by heating SiC nanotube at 1300 C in a low vacuum.