Superconductivity in Cr-1212 Cuprates Sr_&ly;2-x>Ba_xYCu_<2.8>Cr_<0.2>O_z
スポンサーリンク
概要
- 論文の詳細を見る
The Cr-1212 cuprates Sr_&ly;2-x>Ba_xYCu_<2.8>Cr_<0.2>O_7 (x≤0.75) were annealed at high oxygen pressures. Although the Ba-free sample was not superconductive, the others exhibited bulk superconductivity after annealing. The critical oxygen content needed for the appearance of superconductivity for the x=0.5 cuprate is close to 7.22 or 7.28 and depends on annealing temperature. The higher value is due to the higher Cr valence. Even if unusually high Cr valence of 6+ is assumed, the average formal Cu valence required for the appearance of superconductivity is high. The Cr-1212 phase (x≤0.5) is a special material in this respect.
- 社団法人応用物理学会の論文
- 1995-11-15
著者
関連論文
- Observation of Heat Diffusion across Submicrometer Metal Thin Films Using a Picosecond Thermoreflectance Technique
- Observation of Heat Diffusion across Submicrometer Metal Thin Films Using a Picosecond Thermoreflectance Technique
- Picosecond Thermoreflectance Measurements of Thermal Diffusion in Film/Substrate Two-Layer Systems
- Development of a thermal diffusivity measurement system with a picosecond thermoreflectance technique
- A Measurement Method of Spectral Emissivity Using a Swinging Hemispherical Mirror
- A Thermal Conductivity Measmement Method for Electricity Nonconducting Thin Films Based on Radiation Heat Exchange
- Application of Optical Fibers to the Improvement of Laser Beam Profile for Laser Flash Thermal Diffusivity Measurements
- Thermal Conductivity of Diamond Films Synthesized by Microwave Plasma CVD
- Ba-Site Replacements of Ba_2YCu_3O_z-Type Cuprates and Superconductivity
- Identification of the Superconducting Phase in the Bi-Ca-Sr-Cu-O System : Electrical Properties of Condensed Matter
- Electron Diffraction Study of Ba_2YCu_3O_(y=0.1-0.2)
- Single Crystal X-Ray Structure Analysis of Bi_2(Sr, Ca)_2CuO_x and Bi_2(Sr, Ca)_3Cu_2O_x Superconductors : Electrical Properties of Condensed Matter
- Single-Crystal X-Ray and Magnetization Study of the 106 K Bi-Sr-Ca-Cu-O Superconductor : Electrical Properties Condensed Matter
- A Single Crystal High Temperature X-Ray Study of Orthorhombic Ba_2YCu_O_ Superconductor
- X-Ray Single Crystal Structure Analysis of Tetragonal Ba_2YCu_O_, a High Temperature Form of the Superconductor
- High-Pressure Synthesis of Mo-Containing 1212 and 1222 Compounds, (Cu, Mo)Sr_2YCu_2O_z and (Cu, Mo)Sr_2(Y, Ce)_2Cu_2O_z
- A 105 K Superconducting Phase in the Bi-Sr-Ca-Cu-O System : Electrical Properties of Condensed Matter
- Preparation and Properties of Ba_2YCu_3O_ Single Crystals Grown Using an Indium Oxide Flux : Electrical Properties of Condensed Matter
- Preparation of Ba_2YCu_3O_ with T_c below 65 K
- Superconductivity in Ba_Sr_YCu_3O_
- High Resolution Transmission Electron Microscopy of Defects in High T_c Superconductor Ba_2YCu_3O_y
- Cation-Conductive Ceramics Examined by 1 MV HRTEM
- Study of the Reaction of Ba_2YCu_3O_y with Air at Room Temperature
- Radiometric Calibration of ASTER Data
- Studies on the Thermal Behavior of Ba_2YCu_3O_ by X-Ray Powder Diffraction Method
- Lifetime Spectra of Positrons in ZrO_2
- Preparation of Single Crystals of the Superconductor Ba_2YCu_3O_
- Crystal Structure of a Ba-Y-Cu-O Superconductor as Revealed by Rietveld Analysis of X-Ray Powder Diffraction Data
- Experimentally Verified Characteristics of the INS Synchrotron Orbit Radiation in the Visible Spectrum
- Critical-Temperature Optimization in Sr_2YCu_3O_z and Sr_2TmCu_3O_z
- Preparation and Properties of Single Crystals of the High-T_c Oxide Superconductor in the Bi-Sr-Ca-Cu-O System : Electrical Properties of Condensed Matter
- Electrical Properties and Phase Transformation of ZrO_2 Single Crystals
- Preparation and Properties of Three Types of Orthorhombic Superconductor Ba_YCu_O_
- Structural and Electrical Anomalies of Ba_2YCu_3O_ at the Oxygen Stoichiometry of 6.48 : Electrical Properties of Condensed Matter
- High-Pressure Synthesis of Superconducting (Cu, C)-1212 Compound (Cu, C)Ba_2(Y, Ca)Cu_2O_z
- High-Pressure Synthesis and Electron Microscopic Study of 1212 Lead Cuprates (Pb, Cu)Sr_2(Y, Ca)Cu_2O_z
- Structure of a Twin Boundary in YBa_2Cu_3O_
- Preparation of a New Superconductor Sr_2Y_Ca_Cu_Pb_O_y
- Preparation and Properties of Superconducting Copper Oxides (Pb, Cu)(Sr, Ba)_2(Y, Ca)Cu_2O_z
- Preparatiorn and Structure of Al(Sr, Ca)_2HoCu_2O_7 and AlSr_2(Ho, Ca)Cu_2O_7 Cuprates
- High-Oxygen-Pressure Synthesis of Superconducting YBa_2Cu_3O_
- Synthesis of the 107 K Superconducting Phase in the Bi-Sr-Ca-cu-O System : Electrical Properties of Condensed Matter
- Crystallization of 107 K Superconducting Phase and Partial Melting in the Bi-(Pb)-Sr-Ca-Cu-O System : Electrical Properties of Condensed Matter
- Preparation and Properties of a Layered Copper Oxide Bi_Pb_xSr_2Y_Ca_uCu_2O_y
- Compositional Dependences of the Superconducting Transition Temperatures of the Low-T_c Bi-Pb-Sr-Ca-Cu Oxides
- A Cryslallographic Study on Ba_2YCu_3O_
- Preparation of Pure 80 K Superconductors in the Bi-Sr-Ca-Cu Oxide System
- High-Pressure Synthesis of AlSr_2Ho_Ca_xCu_20_7
- Superconductivity in Cr-1212 Cuprates Sr_&ly;2-x>Ba_xYCu_Cr_O_z
- Oxygenation and Critical-Temperature Optimization in M-1212 Cuprates (Sr, Ba)_2YCu_M_O_z (M=Ti, Ga, Ge, Al)
- Absolute Radiometer with Uniform Sensitivity over the Surface of the Receiver
- Superconducting Critical Temperature of Overdoped LnBa_2Cu_3O_ (Ln=La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm and Yb)
- Preparation of New Superconducting Cuprate (Ru, Nb)Sr_2(Sm, Ce)_2Cu_2O_z
- High-Pressure Synthesis of New Superconducting Compound CuSr_2(Y, Ce)_2Cu_2O_z
- An Absolute Radiometer with Uniform Response; Fabrication, Characteristics and Analysis
- Measurements of Thermophysical Properties at High Temperatures Using a Feedback-Controlled Pulse-Heating Technique (第16回センシングフォーラム 資料--センシング技術の新たな展開と融合) -- (セッション5C 温度計測(2))
- Graphite from the Ryoke metamorphic rocks in the Takato-Shiojiri area central Japan(短報)
- Preparation of cubic HZr2(PO4)3 and related compounds.