Details

Autor(en) / Beteiligte

• Nakajima, Yasuyuki
• Taen, Toshihiro
• Tamegai, Tsuyoshi

Titel

Doping dependence of magnetic and transport properties in single crystalline Co-doped BaFe2As2

Ist Teil von

• Physica. C, Superconductivity, 2010-12, Vol.470 (SUP1), p.S408-S410

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2010

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We report the doping dependence of transport and magnetic properties in Co-doped BaFe2As2. With increasing Co concentration x, structural and magnetic transitions are suppressed and superconductivity emerges in the range of 0.3<x<0.15. T-linear resistivity is observed at the optimally doped composition x=0.075 and the temperature exponent of the resistivity increases with x. Critical current density Jc at low temperatures and low fields obtained from bulk magnetization is reasonably large and the doping dependence shows a maximum at x∼0.07 similar to Tc. The values of Jc at low temperatures reach about 1×106A/cm2 around the optimally doped region, which is potentially attractive for technological applications.