Boosting Superconducting Properties of Fe(Se, Te) via Dual-Oscillation Phenomena Induced by Fluorine Doping

2019 ◽  
Vol 11 (20) ◽  
pp. 18825-18832
Author(s):  
Jixing Liu ◽  
Shengnan Zhang ◽  
Meng Li ◽  
Lina Sang ◽  
Zhi Li ◽  
...  
2021 ◽  
Vol 32 (8) ◽  
pp. 10368-10375
Author(s):  
Botao Shao ◽  
Shengnan Zhang ◽  
Jixing Liu ◽  
Jianqing Feng ◽  
Chengshan Li ◽  
...  

Author(s):  
E. L. Hall ◽  
A. Mogro-Campero ◽  
L. G. Turner ◽  
N. Lewis

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.


Author(s):  
Jafar Javadpour ◽  
Bradley L. Thiel ◽  
Sarikaya Mehmet ◽  
Ilhan A. Aksay

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.


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

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 ◽  
...  

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

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 507
Author(s):  
Vasiliy N. Kushnir ◽  
Serghej L. Prischepa ◽  
Michela Trezza ◽  
Carla Cirillo ◽  
Carmine Attanasio

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.


Author(s):  
Yu Lin ◽  
Yutong Liu ◽  
Liang Zheng ◽  
Dajin Zhou ◽  
Zhou Yu ◽  
...  

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