Enhancement in the superconducting properties of Mn3O4-YBCO composite superconductor sample

2020 ◽  
Author(s):  
Mamta ◽  
Arun Mondal ◽  
Mohit Pal ◽  
Satyendra Prakash Pal ◽  
Neeraj Khare
Keyword(s):  
Superconducting Properties ◽  
Composite Superconductor

Superconducting Properties of YBa2Cu3O7-δ Doped with Various Metals and Oxides

1987 ◽  
Vol 99 ◽  
Author(s):  
R. C. Sherwood ◽  
S. Jin ◽  
T. H. Tiefel ◽  
R. B. Van Dover ◽  
R. A. Fastnacht ◽  
...  
Keyword(s):  
Thin Film ◽  
Mechanical Properties ◽  
Crystal Growth ◽  
Superconducting Devices ◽  
Melt Processing ◽  
Complete Elimination ◽  
Practical Application ◽  
Superconducting Properties ◽  
Composite Superconductor ◽  
Superconductor Wire

ABSTRACTThe interactions of YBa2Cu3O7-δ type high Tc superconductors with other metals and oxides are of significant technical importance because of the need for i) proper stabilizing normal metal for composite superconductor wire, ii) nonreactive crucible materials for melt processing or crystal growth, and iii) suitable nonpoisonous substrate materials for thin film/thick film superconducting devices. For these reasons, and also for the purpose of exploring possible improvements in Tc, Jc and mechanical properties, the effects of various metal and oxide additions (1–40% by weight) have been investigated. It is shown that many of the elements in the periodic table deteriorate the superconducting properties to a various degree ranging from a broadened transition or reduced Tc to a complete elimination of the superconducting behavior. However, silver, gold and cadmium were relatively benign or slightly improved the properties. These benign materials have potential for practical application in superconducting composites.

Characterization of Y-Ba-Cu-O films grown on silicon substrates by sequential evaporation

1988 ◽  
Vol 46 ◽  
pp. 866-867
Author(s):  
E. L. Hall ◽  
A. Mogro-Campero ◽  
L. G. Turner ◽  
N. Lewis
Keyword(s):  
Thin Film ◽  
Thin Film Deposition ◽  
Superconducting Films ◽  
Electron Beam Evaporation ◽  
Film Deposition ◽  
Silicon Substrates ◽  
Superconducting Properties ◽  
Sequential Electron ◽  
Thin Superconducting Films

There is great interest in the growth of thin superconducting films of YBa2Cu3Ox on silicon, since this is a necessary first step in the use of this superconductor in a variety of possible electronic applications including interconnects and hybrid semiconductor/superconductor devices. However, initial experiments in this area showed that drastic interdiffusion of Si into the superconductor occurred during annealing if the Y-Ba-Cu-O was deposited direcdy on Si or SiO2, and this interdiffusion destroyed the superconducting properties. This paper describes the results of the use of a zirconia buffer layer as a diffusion barrier in the growth of thin YBa2Cu3Ox films on Si. A more complete description of the growth and characterization of these films will be published elsewhere.Thin film deposition was carried out by sequential electron beam evaporation in vacuum onto clean or oxidized single crystal Si wafers. The first layer evaporated was 0.4 μm of zirconia.

Processing and characterization of YBa2Cu3O7−x/Ag composites

1990 ◽  
Vol 48 (4) ◽  
pp. 46-47
Author(s):  
Jafar Javadpour ◽  
Bradley L. Thiel ◽  
Sarikaya Mehmet ◽  
Ilhan A. Aksay
Keyword(s):  
Composite System ◽  
Precursor Solution ◽  
Microstructural Development ◽  
Superconducting Properties ◽  
Practical Applications ◽  
Nitrate Precursor ◽  
Cold Pressed ◽  
Tape Cast ◽  
Composite Samples

Practical applications of bulk YBa2Cu3O7−x materials have been limited because of their inadequate critical current density (jc) and poor mechanical properties. Several recent reports have indicated that the addition of Ag to the YBa2Cu3O7−x system is beneficial in improving both mechanical and superconducting properties. However, detailed studies concerning the effect of Ag on the microstructural development of the cermet system have been lacking. Here, we present some observations on the microstructural evolution in the YBa2Cu3O7−x/Ag composite system.The composite samples were prepared by mixing various amounts (2.5 - 50 wt%) AgNO3 in the YBa2Cu3O7−x nitrate precursor solution. These solutions were then spray dried and the resulting powders were either cold pressed or tape cast. The microstructures of the sintered samples were analyzed using SEM (Philips 515) and an analytical TEM (Philips 430T).The SEM micrographs of the compacts with 2.5 and 50 wt% Ag addition sintered at 915°C (below the melting point of Ag) for 1 h in air are displayed in Figs. 1 and 2, respectively.

SUPERCONDUCTING PROPERTIES OF IRIDIUM THIN FILMS

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-608-C6-609
Author(s):  
L. B. Holdeman ◽  
R. J. Soulen ◽  
Jr ◽  
T. F. Finnegan ◽  
P. N. Peters
Keyword(s):  
Thin Films ◽  
Superconducting Properties

MAGNETIC AND SUPERCONDUCTING PROPERTIES OF SUBSTITUTED YBa2 (Cu1-xMx)3 O7 COMPOUNDS (M = 3d METAL)

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-2201-C8-2202
Author(s):  
Ying-Chang Yang ◽  
Yuan-Bo Zha ◽  
Wei-Chun Yuan ◽  
Jian Lan ◽  
Zun-Xiao Liu ◽  
...  
Keyword(s):  
Superconducting Properties

Synthesis and superconducting properties of (Au) /CuTl-1223 composites

2015 ◽  
Vol 618 ◽  
pp. 110-114 ◽  
Author(s):  
Abdul Jabbar ◽  
Irfan Qasim ◽  
Khalid M. Khan ◽  
Zulqurnain Ali ◽  
K. Nadeem ◽  
...  
Keyword(s):  
Superconducting Properties

scholarly journals Superconducting Order Parameter Nucleation and Critical Currents in the Presence of Weak Stray Fields in Superconductor/Insulator/Ferromagnet Hybrids

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 507
Author(s):  
Vasiliy N. Kushnir ◽  
Serghej L. Prischepa ◽  
Michela Trezza ◽  
Carla Cirillo ◽  
Carmine Attanasio
Keyword(s):  
Phenomenological Theory ◽  
Critical Currents ◽  
Superconducting Phase ◽  
Stray Field ◽  
Superconducting Properties ◽  
Ginzburg Landau ◽  
Ferromagnetic Layers ◽  
Linearized System ◽  
Critical Current Density Jc ◽  
Usadel Equations

The stray fields produced by ferromagnetic layers in Superconductor/Insulator/Ferromagnet (S/I/F) heterostructures may strongly influence their superconducting properties. Suitable magnetic configurations can be exploited to manipulate the main parameters of the hybrids. Here, the nucleation of the superconducting phase in an external magnetic field that periodically oscillates along the film width is studied on the base of the numerical solution of the linearized system of Usadel equations. In addition, the effect of the magnetic configuration of the F-layer on the temperature dependence of the critical current density, Jc(T), is investigated in the framework of the Ginzburg–Landau phenomenological theory on the base of the oscillating model of a stray field. By following this approach, the Jc(T) dependence of a Nb/SiO2/PdNi trilayer is reproduced for different magnetic configurations of the PdNi layer.

Improved superconducting Properties of NaCl doped MgB2

2021 ◽  
pp. 1-1
Author(s):  
Yu Lin ◽  
Yutong Liu ◽  
Liang Zheng ◽  
Dajin Zhou ◽  
Zhou Yu ◽  
...  
Keyword(s):  
Superconducting Properties ◽  
Doped Mgb2
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