Home

Formerly "European Superconductivity News Forum (ESNF)"
Joint publication of the of the IEEE Council on Superconductivity (CSC) and
the European Society for Applied Superconductivity (ESAS), with cooperation of Editors from Asia, Australia and New Zealand

    You are here

    • You are here:
    • Home > New Superconductor with Tc > 50 K

New Superconductor with Tc > 50 K

Regularly Updated Latest News, Quarterly
Published Papers, Preprints & Presentations

New Superconductor with Tc > 50 K

May 23, 2008 (H25). A group of Chinese authors reported in the latest paper published inSuperconductor Science and Technology (SuST) on the recently discovered FeAs-based superconducting compounds.

“Superconductivity at 53.5 K in GdFeAsO(1-δ)” by Z-A Ren et al. reports the fabrication and superconductivity of the iron-based arsenic-oxideGdFeAsO(1-δ) compound with oxygen-deficiency, which has an onset resistivity transition temperature of 53.5 K.  This material has the same crystal structure as the high-Tc ReFeAsO1−δ family (Re = rare earth metal) newly discovered by Kamihara et al[1].  TheGdFeAsO(1-δ) has a further reduced crystal lattice, while the Tc is lower than in the SmFeAsO1−δsystem. 

As a rapid communication, this SuST paper is permanently free for everyone to read at http://www.iop.org/EJ/toc/0953-2048/21/8

temperature

Fig. 1.  The temperature dependence of the dc susceptibility and the differential ZFC curve for the nominal GdFeAsO0.85 sample synthesized by the high-pressure synthesis (HP) method.

[1] Kamihara Y, et al., J. Am. Chem. Soc130 3296 (2008).
The SNF had 967 visitors in the month of March 2017,
and has had 137,617 visitors 
since its inception on July 15, 2007.