• Ascencio, Francisco
• Castro, A. A.
• Escudero, Roberto

Abstract

<jats:title>Abstract</jats:title><jats:p>In this research work, we report the synthesis, crystal structure, Raman Study, and magnetic properties at low temperatures of TaC<jats:sub>x</jats:sub> (<jats:italic>x</jats:italic> = 0.00, 1.25, and 1.50) compounds. The experiments are performed on polycrystalline samples synthesized by an arc melting method. The samples show a cubic phase with FFC structure measurements by XRD and were further analyzed by Rietveld refinements in which the small impurity of the Ta<jats:sub>2</jats:sub>C and T<jats:sub>2</jats:sub>O<jats:sub>5</jats:sub> was detected. Raman spectroscopy shows the characteristics of TaC peaks being associated with disordered band (D) and graphitic band (G). The transmission electron microscopy study was performed to obtain the morphology, size, and microstructure of the samples. The magnetic property magnetization curves in zero field cooling (ZFC) and field cooling (FC) modes reveal that the system is characterized as a type II superconductor. The most important aspect of this study is observed with the increase of C doping amount; the T<jats:sub>c</jats:sub> presents a slightly increasing tendency from 9 K to 9.5 K.</jats:p>

Topics

• impedance spectroscopy
• morphology
• compound
• phase
• x-ray diffraction
• experiment
• transmission electron microscopy
• Raman spectroscopy
• magnetization
• superconductivity
• superconductivity