Annealing effects on superconductivity in SrFe2-xNixAs2

作者：Saha S R; Butch N P; Kirshenbaum K; Paglione Johnpierre^*

来源：Physica C-Superconductivity and Its Applications, 2010, 470: S379-S381.

DOI：10.1016/j.physc.2009.11.079

• Superconductivity
• Iron-pnictides
• Annealing
• SrFe2-xNixAs2

Superconductivity has been explored in single crystals of the Ni-doped FeAs-compound SrFe(2-x)Ni(x)ds(2) grown by self-flux solution method. The antiferromagnetic order associated with the magnetostructural transition of the parent compound SrFe2As2 is gradually suppressed with increasing Ni concentration x and bulk-phase superconductivity with full diamagnetic screening is induced near the optimal doping of x = 0.15 with a maximum transition temperature T-c similar to 9.8 K. An investigation of high-temperature annealing on as-grown samples indicate that the heat treatment can enhance T-c as much as similar to 50%.

• 出版日期2010-12