Abstract
Ni substitution effects on the Fe1-xNixSe0.5Te0.5 (x = 0.00, x = 0.05, and x = 0.10) superconductor structure were studied. The polycrystalline samples were synthesized using the solid-state reaction method. The morphology of the samples consists of plate-like crystals with a lamellar structure. X-ray diffraction analyses showed that the samples are described as presenting a PbO-type structure with a tetragonal space group P4/nmm. We analyzed the chemical composition of single crystals using energy-dispersive spectroscopy, and the results showed that there are variations on the chemical composition when the Fe ions are substituted by Ni. Raman spectroscopy on ab- and a(b)c-planes revealed four phonon modes allowed by symmetry. Changes were observed in the spectra with Ni doping. From magnetic measurements of x = 0.00 and x = 0.05 samples, the results showed that the samples are superconductor with a sharp transition in temperatures TC of 14.4 K and 14.6 K, respectively.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
