Some Doping Effects on the Semiconducting Properties of Gd_2CuO_4

スポンサーリンク

概要

• 論文の詳細を見る

• Some doping effects on the semiconducting properties of the Gd_2CuO_4 compound were investigated. The ZrO_2 or ThO_2 (0.5 mol%) lowered the resistivity of the Gd_2CuO_4 at room temperature by a factor of 10^4. The thermoelectric powers of the same samples were negative. These were explained as being due to the Cu^+ ions formed by the dopants. The CaO dopant lowered the resistivity by a factor of ten and converted the sign of the thermoelectric power from negative to positive. The resistivity of the BaO-doped samples increased with an increase in the dopant concentration up to 0.5 mol% and decreased with an increase in the dopant concentration in the concentration region lower than that. This suggested that the dopant of BaO was less effective on the resistivity-lowering than was the CaO. The samples doped with the ZrO_2 and CaO simultaneously gave a trend similar to those doped with the BaO in the concentration dependence of the resistivity. Silver oxide and indium oxide were also employed as dopants, but no doping effects were observed on either resistivity or the lattice parameters.

• 東北大学の論文

著者

• Yajima Seishi

  The Research Institute For Iron Steel And Other Metals

• KENJO Tadao

  The Research Institute for Iron, Steel and Other Metals

関連論文

• Siliconated Pyrolytic Graphite : Part 1. Preparation and Some Properties
• 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
• 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

もっと見る 閉じる

スポンサーリンク