Siliconated Pyrolytic Graphite : Part 4. Electrical Resistivity

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概要

• 論文の詳細を見る

• Investigations have been made on the electrical resistivity ρ of siliconated pyrolytic graphite (PG(Si), 0.02 to 4 wt % silicon) prepared by pyrolysis of a mixture of propane gas and silicon tetrachloride vapour at various deposition temperatures, total gas pressures, and partial pressures of silicon tetrachloride vapour. With increase in the partial pressure of silicon tetrachloride, ρ_a decreases and ρ_c increases. The electrical anisotropy (ρ_c/ρ_a) of PG(Si) is two orders of magnitude higher than that of PG, at deposition temperatures between 1600 and 1700℃ and a total gas pressure of 50 torr. Effects of the silicon content, density and structural features on the resistivities and the anisotropy have been discussed. The anisotropy is closely related to the preferred orientation, and high values of ρ_c/ρ_a induced by discontinuity in the stacking of crystallites are lowered in silicon-rich PG(Si) by the presence of SiC between the crystallites.

• 東北大学の論文

著者

• Hirai Toshio

  The Research Institute For Iron Steel And Other Metals

• Yajima Seishi

  The Research Institute For Iron Steel And Other Metals

関連論文

• Th-ThC Phase Diagram
• Preferred Orientation in Pyrolytic Graphite
• Siliconated Pyrolytic Graphite : Part 1. Preparation and Some Properties
• Chemical Bond of CVD-Si_3N_4 by Compton Scattering Measurement
• Field-Cooling Effect in the Amorphous Magnetic Oxide
• The Preparation and Crystal Structure of Ternary Rare Earth Borides, RCo_3B_2
• Siliconated Pyrolytic Graphite : Part 4. Electrical Resistivity
• Microstructure and Density of Pyrolytic Graphite
• Mechanism of the Pyrolytic Graphite Formation
• The Crystal Data of Ternary Rare Earth Borides, RCo_2B_2
• Neutron Irradiation Effects in Amorphous Pd-Si Alloy
• Magnetocrystalline Anisotropy of Y_(Co_Fe_y)_ Intermetallic Compounds
• Magnetocrystalline Anisotropy of Nonstoichiometric Y_Co_
• Preparation and Thermal Expansion of Pyrolytic Graphite-Bromine Residual Compounds
• The Electrical Anisotropies of Pyrolytic Graphite and Its Compounds
• Siliconated Pyrolytic Graphite : Part 2. The State of Silicon Present in Siliconated Pyrolytic Graphite
• Siliconated Pyrolytic Graphite : Part 3. Structural Features
• Thermal Properties of Amorphous Si_3N_4-C Composites Prepared by Chemical Vapor Deposition
• Chemical Vapor-Deposited Amorphous Silicon Nitride
• High Temperature Resistivity of Pyrolytic Graphite Bromine Residual Compounds
• Semiconducting Properties of Ln_2CuO_4 (Ln=Rare earths)
• Some Doping Effects on the Semiconducting Properties of Gd_2CuO_4
• The Crystal Structure and Nonstoichiometry of Rare Earth Oxyfluoride
• The Nonstoichiometry of Gadolinium Ditelluride
• The Crystal Data of Ternary Rare Earth Borides, RCo2B2
• The Crystal Structure and Nonstoichiometry of Rare Earth Oxyfluoride

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