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Journal Articles

Compatibility of lithium oxide single crystals with tungsten sputtered films; The Effect of passivation films

Nasu, Shoichi*; Nagata, Shinji*; Yoshii, Kiichiro*; Takahiro, Katsumi*; Kikuchi, Naoto*; Kusano, Eiji*; Moto, Shintaro*; Yamaguchi, Sadae*; Ohashi, Kentaro*; Noda, Kenji; et al.

Funtai Oyobi Fummatsu Yakin, 52(6), p.427 - 429, 2005/06

https://doi.org/10.2497/jjspm.52.427

no abstracts in English

Journal Articles

Preparation of fullerenes by resistive heating vaporization method; Effect of carbon materials

Otsuki, Ryusei*; Nasu, Shoichi*; Fujimori, Ryosuke*; Anada, Kinji*; Ohashi, Kentaro*; Yamamoto, Ryoichi*; Fujii, Kimio; Okubo, Keisuke*

Funtai Oyobi Fummatsu Yakin, 51(8), p.622 - 625, 2004/08

https://doi.org/10.2497/jjspm.51.622

Effects of carbon materials on weight yield of (C$$_{60}$$+C$$_{70}$$) and weight ratios of C$$_{60}$$ to (C$$_{60}$$+C$$_{70}$$) in soot were examined by the Joule resistive heating of four kinds of carbon materials at He gas pressures from 0.7$$times$$10$$^{4}$$$$sim$$8.0$$times$$10$$^{4}$$Pa for collector radii of 45, 50 and 55mm. The yields were in the range of 1 to 8% for graphite with hexagonal lattice, and better than those for glassy carbon. The most effective He gas pressure for the fullerene yield were in the range of 4.0$$sim$$5.3$$times$$10$$^{4}$$Pa. Any collector radii dependence of the yields was not observed. The weight ratios of C$$_{60}$$ to (C$$_{60}$$+C$$_{70}$$) were about 60 to 70%, and showed neither He gas pressure depenndennce nor collector radii depenndence four kinds of carbon materials.

Journal Articles

Preparation of fullerenes by arc discharge between graphite anode and tungsten cathode; Effects of gas species

Otsuki, Ryusei*; Nasu, Shoichi*; Ohashi, Kentaro*; Yamamoto, Ryoichi*; Fujii, Kimio; Okubo, Keisuke*

Funtai Oyobi Fummatsu Yakin, 51(8), p.626 - 629, 2004/08

https://doi.org/10.2497/jjspm.51.626

The He, Ar and the Penning gas pressureeffects on the preparation yieldsof the fullerenes were investigated by means of the arc discharge method using graphite(PGX) anode buried in a tungsten rod and tungsten cathode for collector radii of 50mm. The maximum yield showed about 13-14 % at 67KPa in He gas. The yields in the mixtures of He and Ne gases (the Penning effect) were similar to those obtained in He gas. Weight ratios of C$$_{60}$$ to (C$$_{60}$$+C$$_{70}$$) were about 20% in Ar gas, while those in He and Penning gas were about 60%. Ultra sonic vibration was effective to separate C$$_{70}$$ from soot.

Journal Articles

Preparation of fullerenes by arc discharge method; Effects of deposition temperature

Otsuki, Ryusei*; Nasu, Shoichi*; Matsushita, Masaki*; Fujii, Kimio; Ohashi, Kentaro*; Yamamoto, Ryoichi*

Funtai Oyobi Fummatsu Yakin, 51(8), p.633 - 634, 2004/08

https://doi.org/10.2497/jjspm.51.633

We examined effects of deposition temperatures and collector radii onthe yields of fullerenes by arc discharge. Yields of fullerenes were 7-10%, 4-6% and 0.5-1% in the liquid nitrogen-cooling, water-cooling, non-cooling, respectively, and were better with a collector radius of 50mm than with that of 30mm. The weight ratios of C$$_{60}$$/C$$_{70}$$ are about one for all runs of experiments.

Journal Articles

The Effect of hydrophobic picrate on the extraction and separation of lanthanides(III) with carbamoylmethylene phosphine oxide

Naganawa, Hirochika; Suzuki, Hideya; Tachimori, Shoichi; Nasu, Akinobu*; Sekine, Tatsuya*

Physical Chemistry Chemical Physics, 3(12), p.2509 - 2517, 2001/06

https://doi.org/10.1039/b100073j
 Times Cited Count：33 Percentile：71.23(Chemistry, Physical)

no abstracts in English

Journal Articles

Effect of the hydrophobic anion of picrate on the extraction of europium(III) with diamide

Naganawa, Hirochika; Suzuki, Hideya; Tachimori, Shoichi; Nasu, Akinobu*; Sekine, Tatsuya*

Bulletin of the Chemical Society of Japan, 73(3), p.623 - 630, 2000/03

https://doi.org/10.1246/bcsj.73.623
 Times Cited Count：6 Percentile：35.49(Chemistry, Multidisciplinary)

no abstracts in English

Journal Articles

Specific Heats of LaIn$$_3$$, CeIn$$_3$$ and PrIn$$_3$$ at Temperatures Between 1$$cdot$$5 and 4$$cdot$$2$$^{circ}$$K

Nasu, Shoichi; Van Diepen, A. M.*; Neumann, H. H.*; Craig, R. S.*

Journal of Physics and Chemistry of Solids, 32(12), p.2773 - 2777, 1971/00

https://doi.org/10.1016/S0022-3697(71)80370-0
 Times Cited Count：28

no abstracts in English

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