Superconductivity at 39 K in New Iron Pnictide Oxide (Fe2As2)(Sr4(Mg,Ti)2O6)

Details Superconductivity at 39 K in New Iron Pnictide Oxide (Fe2As2)(Sr4(Mg,Ti)2O6) Superconductivity at 39 K in New Iron Pnictide Oxide (Fe2As2)(Sr4(Mg,Ti)2O6)

2009-09-16

arxiv.org/abs/0909.2945v3

Supercond. Sci. Technol. 23 (2010) 045001

Physics

Condensed Matter

Superconductivity

This paper has been withdrawn because new version of the paper has been submitted as arXiv:0912.1840

Scientific paper

10.1088/0953-2048/23/4/045001

We have discovered a new iron pnictide oxide superconductor (Fe2As2)(Sr4(Mg,Ti)2O6). This material is isostructual with (Fe2As2)(Sr4M2O6) (M = Sc, Cr), which was found in our previous study. The structure of this compound is tetragonal with a space group of P4/nmm and consists of the anti-fluorite type FeAs and perovskite-type blocking layers. The lattice constants are a = 3.935 A and c = 15.952 A for (Fe2As2)(Sr4MgTiO6). In both magnetization and resistivity measurements, this compound exhibits superconductivity below 10 K. Moreover, ratio of Mg and Ti in this compound can be changed toward Ti-rich composition. (Fe2As2)(Sr4Mg1-xTi1+xO6) phase is obtained at 0 < x as a main phase, and Tc and superconducting volume fraction increase with increasing x. The highest Tc(onset) was confirmed at 39 K for x = 0.6 in resistivity measurement.

Affiliated with

Also associated with

No associations

Rating

Superconductivity at 39 K in New Iron Pnictide Oxide (Fe2As2)(Sr4(Mg,Ti)2O6) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Superconductivity at 39 K in New Iron Pnictide Oxide (Fe2As2)(Sr4(Mg,Ti)2O6), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superconductivity at 39 K in New Iron Pnictide Oxide (Fe2As2)(Sr4(Mg,Ti)2O6) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-582456