A Detailed Numerical Analysis for High-Tc Superconductivity and Physical Analysis of the High-Tc Phase Diagram Based on the U(1) Slave-Boson Approach to the t − J Hamiltonian

2020 ◽  
Vol 76 (11) ◽  
pp. 1020-1024
Author(s):  
Sul-Ah Ahn ◽  
Hyeyoung Cho ◽  
Sung-Ho S. Salk
Keyword(s):  
Phase Diagram ◽  
Numerical Analysis ◽  
Physical Analysis ◽  
High Tc ◽  
High Tc Superconductivity ◽  
High Tc Phase

Phase diagram studies of the BiO1.5PbOSrOCaOCuO system and the formation process of the “2223 (high-Tc)” phase

1991 ◽  
Vol 190 (1-2) ◽  
pp. 18-21 ◽  
Author(s):  
Y. Ikeda ◽  
H. Ito ◽  
S. Shimomura ◽  
Z. Hiroi ◽  
M. Takano ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Formation Process ◽  
High Tc ◽  
High Tc Phase

Refined phase diagram of the H-S system with high- Tc superconductivity

2017 ◽  
Vol 96 (22) ◽  
Author(s):  
Ivan Kruglov ◽  
Ryosuke Akashi ◽  
Seiji Yoshikawa ◽  
Artem R. Oganov ◽  
M. Mahdi Davari Esfahani
Keyword(s):  
Phase Diagram ◽  
High Tc ◽  
High Tc Superconductivity

Modulated structures in (Bi,Pb)-Sr-Ca-Cu-O films

1990 ◽  
Vol 48 (4) ◽  
pp. 62-63
Author(s):  
Shozo Ikeda ◽  
Hirotoshi Hayakawa ◽  
Daniel R. Dietderich
Keyword(s):  
Rf Magnetron Sputtering ◽  
Potential Method ◽  
High Tc ◽  
Bscco System ◽  
Heat Treated ◽  
Modulated Structures ◽  
High Tc Phase ◽  
Deposited Films ◽  
Sputtering System

Pb addition makes easier to form the high Tc phase in the BSCCO system. However, Pb easily vaporized at high temperature. A controlled Pb potential method has been applied to grow the high Tc phase in films. Initially, films are deposited on cleaved MgO substrates using an rf magnetron sputtering system. These amorphous as-deposited films are heat treated in a sealed gold capsule along with a large pellet of Pb-added BSCCO. Details of the process and characterization of the films have been reported elsewhere (1). Films trated for 0.5h at 850° C contain mainly the low Tc phase with a small amount of the high Tc phase. Hawever, films treated for 3h at 850°C consist mainly of the high Tc phase. This film is superconductive with a Tc(zero) of 106K. The Pb/Bi ratio of the films, analysed by SEM- EDS, are 0.12 and 0.18 for heat tratment times of 0.5 and 3h, respectively. The present study investigates the modulated structures of these films using HREM.

Synthesis and study the Structural and electrical and mechanical properties of High Temperature Superconductor Tl0.5Pb0.5Ba2Can-1Cun-xNixO2n+3-δ Substituted with nickel oxide for n=3

2018 ◽  
Vol 31 (3) ◽  
pp. 26 ◽  
Author(s):  
Laheeb. A. Mohammed ◽  
Kareem. A. Jasim
Keyword(s):  
Nickel Oxide ◽  
High Temperature Superconductor ◽  
Sintering Temperature ◽  
Concentration Effects ◽  
High Tc ◽  
Xrd Diffraction ◽  
Ni Content ◽  
High Tc Phase ◽  
Pure Phases ◽  
Critical Temperature Tc

   on this research is to study the effect of nickel oxide substitution on the pure phases superconductor Tl0.5Pb0.5Ba2Can-1Cun-xNixO2n+3-δ (n=3) where x=(0,0.2,0.4,0.6,0.8.and 1.0). The specimens in this work were prepared with used  procedure of solid state reaction with sintering temperature 8500C for 24 h .we used technical (4-prob)to calculated and the critical temperature Tc . The results of the XRD diffraction analysis showed that the structure for pure and doped phases was tetragonal with phases high-Tc phase (1223),(1212) and low-Tc phase (1202)  and add to the presence of some impure phase. It was noted the value a=b,c  the parameter of  the lattice increment  with the increment of Ni content. The increment of (NiO) concentration effects electrical resistivity, dielectric constant and the hardness.

scholarly journals Triplet hole propagation and high Tc superconductivity

1991 ◽  
Vol 185-189 ◽  
pp. 1603-1604
Author(s):  
A.M. Oleś ◽  
J. Zaanen ◽  
P. Horsch
Keyword(s):  
High Tc ◽  
High Tc Superconductivity
Sign in / Sign up

Export Citation Format

Share Document