2009/12/21 by X. L. Wang, H. Y. Shi, X. W. Yan +6 · 1 citation
Materials Science · Physics and Astronomy · #Critical field #Diffraction #High-temperature superconductivity #Iron-based superconductors research #Magnetic and transport properties of perovskites and related materials #Magnetization #Microstructure #Phase (matter) #Scanning electron microscope #Superconductivity #Superconductivity in MgB2 and Alloys #cond-mat.mtrl-sci #cond-mat.supr-con
paper · pdf · doi:10.1063/1.3290983
published as Applied Physics Letters 96, 012507(2010) · 9 pages, 4 figures. Accepted for publication in Applied Physics Letters
arxiv created 2009/12/21 · openalex publication_date 2010/01/04 · arxiv updated 2015/05/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Polycrystalline samples with nominal composition of Ba(Fe1−xIrx)2As2 (x=0.10, 0.15, and 0.20) were investigated by means of x-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity, and magnetization measurements. XRD and SEM results showed that almost single phase samples were obtained. Bulk superconductivity with TC∼28 K was observed in the x=0.10 sample. TC∼28 K is the highest superconducting critical temperature among the reported data for electron-doped AFe2As2-type (A=Ca, Sr, and Ba) superconductors. The upper critical field Hc2(0) reaches as high as 65 T for the x=0.10 sample. The underlying physics is discussed in connection with Co-doping case.