Single crystal of superconducting SmFeAsO1-xFy grown at high pressure

Details Single crystal of superconducting SmFeAsO1-xFy grown at high pressure Single crystal of superconducting SmFeAsO1-xFy grown at high pressure

2008-06-02

arxiv.org/abs/0806.0337v2

J. Phys.: Condens. Matter 20 (2008) 342202

Physics

Condensed Matter

Superconductivity

12 pages, 3 tables, 6 figures

Scientific paper

10.1088/0953-8984/20/34/342202

Single crystals of SmFeAsO1-xFy of a size up to 120 micrometers have been grown from NaCl/KCl flux at a pressure of 30 kbar and temperature of 1350-1450 C using the cubic anvil high-pressure technique. The superconducting transition temperature of the obtained single crystals varies between 45 and 53 K.Obtained crystals are characterized by a full diamagnetic response in low magnetic fields and by a high critical current density in high magnetic fields. Structural refinement has been performed on single crystal. Differential thermal analysis investigations at 1 bar Ar pressure show decomposition of SmFeAsO1-xFy at 1302 C.

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