Browse > Article
http://dx.doi.org/10.9714/psac.2014.16.3.004

Fabrication details of Ba1-xKxFe2As2 films by pulsed laser deposition technique  

Lee, Nam Hoon (BK21 Physics division and Department of Physics, Sungkyunkwan University)
Jung, Soon-Gil (BK21 Physics division and Department of Physics, Sungkyunkwan University)
Ranot, Mahipal (BK21 Physics division and Department of Physics, Sungkyunkwan University)
Kang, Won Nam (BK21 Physics division and Department of Physics, Sungkyunkwan University)
Publication Information
Progress in Superconductivity and Cryogenics / v.16, no.3, 2014 , pp. 4-6 More about this Journal
Abstract
Among Fe-based superconductors, potassium doped $BaFe_2As_2$ is favorable for applications because of its relatively high transition temperature and low anisotropy. To study the superconducting properties and the applicable aspects, high quality thin films of potassium doped $BaFe_2As_2$ should be fabricate. However, the high volatility of potassium makes it difficult to fabricate thin films of this compound. In this paper, we discuss the details of the experimental conditions used to fabricate $Ba_{1-x}K_xFe_2As_2$ films by ex situ PLD method. In the first set of samples, barium ratio in the target was controlled to make films with various potassium doping rate. However, in the second set of samples, the amount of potassium was controlled to find out optimal conditions for making high quality $Ba_{1-x}K_xFe_2As_2$ films.
Keywords
Iron-based; films; PLD;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Y. Kamihara, T. Watanabe, M. Hirano, and H. Hosono, "Iron-based layered superconductor La[$O_{1-x}F_{x}$]FeAs (x = 0.05-0.12) with $T_c$ = 26 K," J. Am. Chem. Soc., 130, 3296, 2000.
2 J. Yang, Z. Li, W. Lu, W. Yi, X.-L. Shen, Z.-A.Ren, G.-C. Che et al., "Superconductivity at 53.5 K in $GdFeAsO_{1-\delta}$," Supercond. Sci. Technol; 21, 082001, 2008.   DOI   ScienceOn
3 Z.-A. Ren, W. Lu, J. Yang, W. Yi, X.-L. Shen, Z.-C. Li et al., Superconductivity at 55K in Iron-based F-doped layered quaternary compound Sm[$O_{1-x}F_{x}$]FeAs," Chin. Phys. Lett; 25, 2215, 2008.   DOI   ScienceOn
4 T. Hanaguri, S. Niitaka, K. Kuroki, and H. Takagi, "Unconventional s-wave superconductivity in Fe(Se,Te)," Science, 328, 474, 2010.   DOI   ScienceOn
5 H. Q. Yuan, J. Singleton, F. F. Balakirev, S. A. Baily, G. F. Chen, J. L. Luo, and N. L. Wang,."Nearly isotropic superconductivity in (Ba,K)$Fe_2As_2$," Nature; 457, 565, 2009.   DOI   ScienceOn
6 N. Ni, S. L. Bud'ko, A. Kreyssig, S. Nandi, G. E. Rustan, A. I. Goldman et al., "Anisotropic thermodynamic and transport properties of single-crystalline $Ba_{1−x}K_xFe_2As_2$ (x=0 and 0.45)," Phys. Rev. B; 78, 014507, 2008.   DOI   ScienceOn
7 M. Putti, I. Pallecchi, E. Bellingeri, M. R. Cimberle, M. Tropeano, C. Ferdeghini et al., "New Fe-based superconductors: properties relevant for applications," Supercond. Sci. Technol; 23 034003, 2010.   DOI   ScienceOn
8 C. Ren, Z. S. Wang, H. Q. Luo, H. Yang, L. Shan, and H. H. Wen, "Evidence for two energy gaps in superconducting $Ba_{0.6}K_{0.4}Fe_2As_2$ single crystals and the breakdown of the Uemura Plot," Phys. Rev. Lett; 101, 257006, 2008.   DOI   ScienceOn
9 N. H. Lee, S.-G. Jung, D. H. Kim, and W. N. Kang, "Potassium-doped $BaFe_2As_2$ superconducting thin films with a transition temperature of 40 K," Appl. Phys. Lett; 96, 202505, 2010.   DOI   ScienceOn
10 S. Lee, J. Jiang, Y. Zhang, C. W. Bark, J. D. Weiss, and C. Tarantini et al., "Template engineering of Co-doped $BaFe_2As_2$ single-crystal thin films," Nature Mater; 9, 397, 2010.   DOI   ScienceOn
11 E. M. Choi, S.-G. Jung, N. H. Lee, Y. S. Kwon, W. N. Kang, D. H. Kim, M. H. Jung, S.-I. Lee, and L. Sun, "In situ fabrication of cobalt-doped $SrFe_2As_2$ thin films by using pulsed laser deposition with excimer laser," Appl. Phys. Lett; 95, 062507, 2008.