Growth of large single crystals of BaFe1.87Co0.13As2 using a nucleation pole

Co-doped iron arsenic single crystals of BaFe1.87Co0.13As2 with dimensions up to 20 × 10 × 2 mm3 were grown using a nucleation pole: an alumina stick served as a nucleation center during growth. The high quality of the crystals was illustrated using measured neutron rocking curves and x-ray diffraction patterns. A very sharp superconducting transition temperature of Tc∼25 K was revealed by both resistivity and susceptibility measurements. A nearly 100% shielding fraction and the bulk nature of the superconductivity for the single crystals were confirmed using magnetic susceptibility data.

[1]  M. Konuma,et al.  Single Crystal Growth and Effect of Doping on Structural, Transport and Magnetic Properties of A1−xKxFe2As2 (A = Ba, Sr) , 2011 .

[2]  R. Prozorov,et al.  Unconventional London penetration depth in single-crystal Ba(Fe0.93Co0.07)2As2 superconductors. , 2008, Physical review letters.

[3]  Q. Tao,et al.  Superconductivity induced by Ni doping in BaFe2As2 single crystals , 2008, 0809.2009.

[4]  P. Canfield,et al.  Effects of Co substitution on thermodynamic and transport properties and anisotropic H c 2 in Ba ( Fe 1 − x Co x ) 2 As 2 single crystals , 2008, 0811.1767.

[5]  Jiaqiang Yan,et al.  Vortex phase diagram of Ba(Fe 0.93 Co 0.07 ) 2 As 2 single crystals , 2008, 0810.1338.

[6]  W. Kwok,et al.  Calorimetric determination of the upper critical fields and anisotropy of NdFeAsO1-xFx single crystals , 2008, 0807.4196.

[7]  David J. Singh,et al.  Superconductivity at 22 K in Co-doped BaFe2As2 crystals. , 2008, Physical review letters.

[8]  A. Leithe-Jasper,et al.  Superconducting state in SrFe2-xCoxAs2 by internal doping of the iron arsenide layers. , 2008, Physical review letters.

[9]  Huiqian Luo,et al.  Growth and characterization of A1−xKxFe2As2 (A = Ba, Sr) single crystals with x = 0–0.4 , 2008, 0807.0759.

[10]  A. Huq,et al.  Superconductivity in LaFe1-xCoxAsO , 2008, 0807.0823.

[11]  G. Li,et al.  Transport and anisotropy in single-crystalline SrFe 2 As 2 and A 0.6 K 0.4 Fe 2 As 2 ( A=Sr , Ba) superconductors , 2008, 0806.2648.

[12]  S. L. Bud'ko,et al.  Anisotropic thermodynamic and transport properties of single-crystalline Ba 1 − x K x Fe 2 As 2 ( x = 0 and 0.45) , 2008, 0806.1874.

[13]  R. Puźniak,et al.  Single crystals of superconducting SmFeAsO1−xFy grown at high pressure , 2008 .

[14]  Marcus Tegel,et al.  Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2. , 2008, Physical review letters.

[15]  J. Howe,et al.  Electronic correlations in the superconductor La Fe As O 0.89 F 0.11 with low carrier density , 2008 .

[16]  Huiqian Luo,et al.  Superconductivity at 36 K in gadolinium-arsenide oxides GdO1−xFxFeAs , 2008, 0804.0835.

[17]  Gang Li,et al.  Superconductivity at 41 K and its competition with spin-density-wave instability in layered CeO1-xFxFeAs. , 2008, Physical review letters.

[18]  Xiyu Zhu,et al.  Superconductivity at 25 K in hole-doped (La1-xSrx)OFeAs , 2008, 0803.3021.

[19]  Hideo Hosono,et al.  Iron-based layered superconductor La[O(1-x)F(x)]FeAs (x = 0.05-0.12) with T(c) = 26 K. , 2008, Journal of the American Chemical Society.