Effects of Nickel substitution on crystalline structure and superconducting properties of YBa2Cu3O7- ceramics.
Journal Title: Journal of New technology and Materials - Year 2017, Vol 7, Issue 2
Abstract
In this study, nickel-substituted Y〖Ba〗_2 (〖Cu〗_(1-x) 〖Ni〗_x )_3 O_(7-δ) ( 0 ≤x ≤4 at.%) superconductor samples were prepared by the conventional solid state reaction method. The effects of Ni substitution on the structure, microstructure, superconducting properties and Raman modes of Y〖Ba〗_2 (〖Cu〗_(1-x) 〖Ni〗_x )_3 O_(7-δ)systemshavebeeninvestigated. The Ni-substituted induces a porous, finer grained structure. The energy dispersive X-ray spectroscopy (EDS) analysis confirmed the incorporation of nickel into the grains. RamanspectroscopyshowsthattheNidopingenhancesthedisorderatthe〖CuO〗_2planes and decreases the oxygen content by the depletion from the CuO chains. The temperature dependent resistivity measurementsρ(T) show a deviation from linearity, due to the opening of a pseudogap. DC susceptibility measurements show that the transition temperature decreases with increasing Ni content.
Authors and Affiliations
Souheila Chamekh, Abderrahmane Bouabellou, Yalçin Elerman, Melike Kaya, Ilker Dincer
Keywords
Related Articles
- EP ID EP259294
- DOI -
- Views 77
- Downloads 0
Study of PVDF/PMMA blend resistance to artificial aging and neutral spray
The resistance of poly (vinylidene fluoride)/poly (methyl methacrylate) (PVDF/PMMA) blends was investigated using the artificial aging and neutral salt spray tests. The solution of each polymer was prepared using the N,...
Chemical synthesis of nanostructured silica from Algerian diatomite
In this research, we reported chemical and soft method for the purification of Algerian diatomite. We discussed the effect of different parameters such as the temperature, pH and acid leaching, on the purity of purified...
Characterization of bioactive compounds in South-Western Algeria propolis samples
The prepared aqueousextract of propolis samples, which are harvested in Rebahia (Saida, Algeria), were analyzed by gas chromatography-mass spectrometry (GC / MS) to provide 50 volatile bioactive compounds. The major comp...
Theoretical investigation of δ-doped double barriers GaAs/AlGaAs RTDs at varying device geometry and temperature dependence
In this article, we proposed a new concept of Si-delta doping in double barrier resonant tunneling diode heterostructure. The double barrier resonant tunneling diodes (DBRTDs) are investigated through the technique of co...
Recovery of nickel and copper from metal finishing hydroxide sludge by kinetic acid leaching
The aim of the present work was the recovery of nickel and copper from metal finishing hydroxide sludge by kinetic acid leaching. The study was divided into two main parts: First, a kinetic model of precipitate leaching...