Enhancement of superconducting properties in FeSe wires using a   quenching technique
  Enhancements of superconducting properties were observed in FeSe wires using a quenching technique. Zero resistivity was achieved at about 10 K in quenched wires, which is about 2 K higher than that of polycrystalline FeSe bulk. Furthermore, transport Jc of quenched wires showed three times higher than that of furnace-cooled wires. In contrast, the quenched polycrystalline FeSe bulks did not show the enhancement of Tc. The quenching technique is a greatly promising for fabricating FeSe wires with high Tc and high Jc, and quenched FeSe wires have high potential for superconducting wire applications. 
Toshinori Ozaki, Yoshikazu Mizuguchi, Satoshi Demura, Keita Deguchi,   Yasuna Kawasaki, Toru Watanabe, Hiroyuki Okazaki, Hir...
cond-mat.supr-con