Comparative Analysis of the Methods for Obtaining Superconducting Fe 1 +    y  Se  x  Te 1 –    x   Single Crystals

M. V. Golubkov; J. I. Gorina; V. V. Rodin; N. N. Sentjurina; V. A. Stepanov; S. G. Chernook

doi:10.1134/S1063774519060051

Comparative Analysis of the Methods for Obtaining Superconducting Fe_1 + _ySe_xTe_1 – _x Single Crystals

Autores: Golubkov M.V.¹, Gorina J.I.¹, Rodin V.V.¹, Sentjurina N.N.¹, Stepanov V.A.¹, Chernook S.G.¹^,2
Afiliações:
1. Lebedev Physical Institute, Russian Academy of Sciences
2. Fiber Optics Research Center, Russian Academy of Sciences
Edição: Volume 64, Nº 6 (2019)
Páginas: 991-995
Seção: Crystal Growth
URL: https://journals.rcsi.science/1063-7745/article/view/194370
DOI: https://doi.org/10.1134/S1063774519060051
ID: 194370

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The Fe_1 + _ySe_xTe_1 – _x single crystals grown by the KCl flux and Bridgman methods have been compared using the same investigation techniques. It is shown that the KCl flux growth yields high-quality Fe_1 + _ySe_xTe_1 – _x superconducting single crystals. The oxygen diffusion coefficient in Fe_1 + _ySe_xTe_1 – _x has been estimated. During the Bridgman crystal growth, a stable nonsuperconducting phase can be formed, which suggests a need for refining the phase diagram of this compound.