Search
Search Results
-
Thermal Conductivity Properties of Glass-Ceramic (Bi2-δ-γGaδTlγ)Sr2Ca2Cu3O10+x High-Tc Superconductors
Glass-ceramic BSCCO superconductors with nominal (Bi 2-δ-γ Ga δ Tl γ )Sr 2 Ca 2 Cu 3 O 10+x compositions, where δ=0.20, 0.40, 0.60 and γ=0.10, 0.30,...
-
Thermal Conductivity Properties of Bi2-αTlαSr2Ca2Cu3O10+z Glass-ceramic HT c Superconductor Rods
The Glass rods with nominal composition of (Bi 2-α Tl α )Sr 2 Ca 2 Cu 3 O 10+z , where α=0.15, 0.25 and 0.35, have been prepared by melt casting...
-
BSCCO Based Superconductors for Magnet Applications
Industries and Universities are develo** various types of BSCCO conductors for magnet and for power applications at intermediate (20–30 K) and at...
-
Anisotropic Properties of Bi2Sr2−xLaxCu1O6+δ Thin-Films Grown on Vicinal SrTiO3 Substrates
Epitaxial Bi 2 Sr 2−x La x Cu 1 O 6+δ thin films were grown on vicinal substrates by magnetron sputtering. The growth mode and the superconductivity of the...
-
Reversible transitions in high - Tc cuprates based point contacts
The influence of electric fields and currents has been investigated in the high-T c superconductors YBaCuO and BiSrCaCuO using a point-contact...
-
Nonlinear ac response of the vortex system in the cubic (K, Ba)BiO3 superconductor
We present ac susceptibility measurements performed on (K, Ba)BiO 3 single crystals with different geometries: thick films, bars and hollow cylinders....
-
Determination of the Intragrain Critical Current Density and Thermogravimetric Analysis on YBCO/Ag Superconductors Irradiated with 60Co Gamma Rays
We investigated the flux pinning behavior induced by gamma irradiation in Y 1 Ba 2 Cu 3 O (7− x ) silver-added samples. The superconductors were prepared...
-
Detection Methods
When detecting neutral particles of thermal energy molecular beams, the difficulties being met have several causes. Thermal beams and background...
-
Effect of Biexciton on Cooper Pairing in High Tc Superconductors
In this paper, we have modified the Cooper theory by considering a biexcitonic attractive interaction for high T c superconductors. We have developed...
-
Representative Conducting Oxides
In this chapter, various representative oxides will be discussed in detail to present useful ideas concerning their electronic transport phenomena.
-
Anomalous magnetic behavior of superconducting thin films in small magnetic fields [4] close to the transition temperature
Using a specially designed SQUID magnetometer we measured the temperature dependence of the critical current density in a ring patterned
... -
Adaptive cooling on the basis of pulse tube refrigerators
Adapting the cryocooler to the particular requirements of a given application is a task that is gaining more and more attention. Due to several...
-
A Possible Explanation of Critical Temperature and Isotope Effect Coefficient of High T c Cuprate Superconductors
The expressions for superconducting transition temperature ( T c ) and isotope effect coefficient (α) have been derived from a generalized integral gap...
-
Synthesis and Properties of the Bi-Based Superconducting Powder Prepared by the Pechini Process
Bi-based superconductors are of great interest in high-temperature superconductors. We describe what is believed to be the first synthesis of these...
-
Charge states of atoms in the lattices of the high-temperature superconductors Tl2Ba2Ca n−1CunO2n+4 and Bi2Sr2Ca n−1CunO2n+4
To determine the charges of atoms in the lattices of the compounds Tl 2 Ba 2 Ca n −1 Cu n O 2 n +4 and Bi 2 Sr 2 Ca n −1 Cu n O 2 n +4 ( n =1,2,3), the parameters of the...
-
(111)⇒(001) orientational phase transitions and nature of the insulating state in BiSrCaCuO (2212 and 2223) films
The influence of the growth temperature T s on the structure, optical absorption, and electrical conductivity of BiSrCaCuO films has been studied. It...
-
High-temperature superconductors as heterostructures
The wave-function envelope method is used to describe the electronic states of the cuprate high- T c superconductors (HTSCs). In this method the 2D...
-
The Effects of Substitution of Sn for Cu in Bi1.75Pb0.25Sr2CaCu2.3−x Sn x Sn x O y
The influence of Sn do** on superconductivity in the Bi-based 2212 phase is studied in this paper. For the samples R–T relations and magnetic...
-
Use of magnetic field screening by high-temperature superconducting films to switch microwave signals
The efficiency with which YBCO films screen an alternating magnetic field near the superconducting transition was measured. In the decimeter range...
-
Critical state of a thin superconducting plate in an inclined magnetic field
A solution is obtained for the Bean critical-state model in an inclined magnetic field which leads to localization of the irreversible magnetic...