Progress in Superconductivity

한국초전도학회 (The Korean Superconductivity Society)
권호 표지

다양한 조건에서의 $Ba_{1-x}K_xFe_2As_2$ 박막 제조

Fabrication of $Ba_{1-x}K_xFe_2As_2$ Thin Films in Various Conditions

  • Lee, Nam-Hoon (Department of Physics and BK21 Physics Division, Sungkyunkwan University) ;
  • Jung, Soon-Gil (Department of Physics and BK21 Physics Division, Sungkyunkwan University) ;
  • Kang, Won-Nam (Department of Physics and BK21 Physics Division, Sungkyunkwan University)
  • 투고 : 2010.09.01
  • 심사 : 2010.10.04
  • 발행 : 2010.10.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Potassium doped $BaFe_2As_2$ superconducting thin films by using an ex situ pulsed laser deposition technique were fabricated in various conditions to find out an optimal growth condition. Controlled conditions were annealing temperature, annealing time, and mass of potassium. The $Ba_{1-x}K_xFe_2As_2$ thin films which has most good quality is fabricated at a condition of annealing temperature at $700^{\circ}C$, annealing time of 60 minutes, and 0.6 g of potassium lumps. In this condition we were able to fabricate good quality films with high transition temperature of ~ 39 K.

키워드

참고문헌

  1. Y. Kamihara, T. Watanabe, M. Hirano, and H. Hosono, J. Am. Chem. Soc. 130, 3296 (2008). https://doi.org/10.1021/ja800073m
  2. F. Hunte et al., Nature 453, 903 (2008). https://doi.org/10.1038/nature07058
  3. S. Margadonna et al., Phys. Rev. B 79 014503 (2009). https://doi.org/10.1103/PhysRevB.79.014503
  4. Y. Mizuguchi et al., Appl. Phys. Lett. 93 152505 (2008). https://doi.org/10.1063/1.3000616
  5. J. H. Tapp et al., Phys. Rev. B 78 060505(R) (2008). https://doi.org/10.1103/PhysRevB.78.060505
  6. X. C. Wang et al., Solid State Commun. 148 538 (2008). https://doi.org/10.1016/j.ssc.2008.09.057
  7. M. Rotter, M. Tegel, D. Johrendt, Phys. Rev. Lett. 101 107006 (2008). https://doi.org/10.1103/PhysRevLett.101.107006
  8. G. F. Chen et al., Phys. Rev. Lett. 100 247002 (2008). https://doi.org/10.1103/PhysRevLett.100.247002
  9. Z. -A. Ren et al., Mater. Res. Innovat. 12 (3) 56 (2008).
  10. Z. A. Ren et al., Chinese Phys. Lett. 25 2215 (2008). https://doi.org/10.1088/0256-307X/25/6/080
  11. T. Kawaguchi, H. Uemura, T. Ohno, M. Tabuchi, T. Ujihara, K. Takenaka,Y. Takeda, and H. Ikuta, Appl. Phys. Lett. 97, 042509 (2010). https://doi.org/10.1063/1.3464171
  12. H. Q. Yuan et at., Nature 457, 565 (2009). https://doi.org/10.1038/nature07676
  13. S. Takeda et al., Appl. Phys. Express 3, 093101 (2010). https://doi.org/10.1143/APEX.3.093101
  14. N. H. Lee, S.-G. Jung, D. H. Kim, and W. N. Kang, Appl. Phys. Lett. 96, 202505 (2010). https://doi.org/10.1063/1.3431583