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arXiv · 0904.1502

Superconducting Fe(1+delta)Se(1-x)Te(x) thin films: Growth, characterization and properties

T. Geetha Kumary·Dipak Kumar Baisnab·J. Janaki·Awadhesh Mani·R. M. Sarguna·P. K. Ajikumar·A. K. Tyagi·A. Bharathi
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Abstract

Thin films of Fe(1+delta)Se(1-x)Te(x) (delta ~ 0.18 & x ~ 0.5) have been successfully grown on (100) oriented single crystalline SrTiO3 and LaAlO3 substrates by pulsed laser deposition. The crystal structure was characterized by x-ray diffraction, and the superconducting properties by electrical resistivity measurements. X-ray diffraction analysis establishes the epitaxial growth of the films with c-axis orientation. Atomic force microscopy showed a smooth surface morphology for the films grown on SrTiO3 substrates. All the films are observed to be superconducting with a Tc of ~ 8-14 K depending on the deposition conditions. The deposition parameters were optimized to obtain good quality films with Tc comparable to that of the target material.

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T. Geetha Kumary, Dipak Kumar Baisnab, J. Janaki, Awadhesh Mani, R. M. Sarguna, P. K. Ajikumar, A. K. Tyagi, A. Bharathi. 2009-04-09. Superconducting Fe(1+delta)Se(1-x)Te(x) thin films: Growth, characterization and properties. https://doi.org/10.1088/0953-2048%2F22%2F9%2F095018

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