Magnetism and superconductivity in Sb-doped binary and ternary iron chalcogenide single crystals

Cherian, Dona and Nagendra, GM and Elizabeth, Suja (2014) Magnetism and superconductivity in Sb-doped binary and ternary iron chalcogenide single crystals. In: JOURNAL OF CRYSTAL GROWTH, 401 . pp. 338-342.

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Abstract

We report the single crystal growth of antimony doped Fe1+yTe and Fe1+yTe0.5Se0.5 (Fe1+ySbxTe1-x (x=0, 2%, 5%) and Fe1+yTe0.49Se0.49Sb0.02) by a modified horizontal Bridgman method. Growth parameters are optimized to obtain high quality single crystals. The antiferromagnetic (AFM) transition at T-N = 62.2 K which is a first order transition, shifts to lower temperature on doping in Fe1+yTe. Alternately when the chalcogen site of the ternary compound Fe1+yTe0.5Se0.5 is doped with Sb, superconductivity is preserved albeit the superconducting transition temperature (T-C) falls slightly and a concomitant reduction occurs in superconducting volume fraction. (C) 2013 Elsevier B.V. All rights reserved,

Item Type:	Journal Article
Publication:	JOURNAL OF CRYSTAL GROWTH
Publisher:	ELSEVIER SCIENCE BV
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Keywords:	Bridgman method; Chalcogenides; Magnetic materials; Superconducting materials
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	03 Sep 2014 10:51
Last Modified:	03 Sep 2014 10:51
URI:	http://eprints.iisc.ac.in/id/eprint/49745

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