Fabrication of FeSe1-x superconducting films with bulk properties

Autor: Jung, Soon-Gil, Lee, Nam Hoon, Choi, Eun-Mi, Kang, Won Nam, Lee, Sung-Ik, Hwang, Tae-Jong, Kim, Dong Ho
Rok vydání: 2010
Předmět:
Druh dokumentu: Working Paper
DOI: 10.1016/j.physc.2010.08.011
Popis: We have fabricated high-quality FeSe1-x superconducting films with a bulk Tc of 11-12 K on different substrates, Al2O3(0001), SrTiO3(100), MgO(100), and LaAlO3(100), by using a pulsed laser deposition technique. All the films were grown at a high substrate temperature of 610 oC, and were preferentially oriented along the (101) direction, the latter being to be a key to fabricating of FeSe1-x superconducting thin films with high Tc. According to the energy dispersive spectroscopy data, the Fe:Se composition ratio was 1:0.90+-0.02. The FeSe1-x film grown on a SrTiO3 substrate showed the best quality with a high upper critical magnetic field [Hc2(0)] of 56 T.
Databáze: arXiv