Bulletin of the American Physical Society
APS March Meeting 2011
Volume 56, Number 1
Monday–Friday, March 21–25, 2011; Dallas, Texas
Abstract: K1.00235 : Synthesis and superconductivity in Li-Fe-As-N
Author:
The preparation of LiFeAs compound either in polycrystal or single crystal
form is difficult to handle due to its reactivity with air and sensitivity
to moisture of lithium. In this report we use Li$_{3}$N, Fe and As as
starting materials. During the heating process, no high pressure, no Ta, Nb
or W tube, is required to synthesize the polycrystalline sample. The
crystallographic data and superconducting transition temperature (T$_{c})$
of the samples as prepared have been investigated through powder x-ray
diffraction, magnetization and electrical-resistivity measurements.
Discussion will be directed toward the influence of N on the
superconductivity in Li-Fe-As from the viewpoint of pinning or substitute
effect.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.K1.235
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