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2010 | 118 | 2 | 331-335
Article title

Structure and Superconductivity of FeSe_{1 - x} and FeTe_{1 - y}Se_{y} Crystals: Dependence on the Synthesis Methods, Starting Composition, and Growth Conditions

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Abstracts
EN
Syntheses of superconducting iron chalcogenides FeSe_{1 - x} (x = 0-0.15) and FeTe_{1 - y}Se_{y} (y = 0.3-0.55) were performed. Superconducting phase of iron selenide was obtained by the solid-state reaction and from liquid phase. The highest values of critical temperature (T_c = 8.2-8.7 K) exhibit FeSe_{1-x} obtained by the crystallization from a melt with excess of iron less than 1 mol%. The samples from a melt contain up to 78% of tetragonal phase, as estimated by the X-ray diffraction. Lattice parameters and unit cell volume for the samples exhibiting highest T_{c} and sharpest transition to superconducting state are limited to narrow range, with c/a ratio close to 1.469. The samples with excess of selenium contain higher amount of hexagonal phase than stoichiometric one. Superconducting single-crystalline samples of FeTe_{1 - y}Se_{y} (up to 100% of tetragonal phase) were obtained using Bridgman's method. When y value increases, the volume of unit cell decreases. The critical temperature T_{c} changes from ≈ 11.5 K for y ≈ 0.3 to ≈ 14.7 K for y ≈ 0.5.
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author
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, PL-02-668 Warsaw, Poland
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, PL-02-668 Warsaw, Poland
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, PL-02-668 Warsaw, Poland
author
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, PL-02-668 Warsaw, Poland
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, PL-02-668 Warsaw, Poland
author
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, PL-02-668 Warsaw, Poland
  • Institute of Electronic Materials Technology, Wólczyńska 133, PL-01-919 Warsaw, Poland
author
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, PL-02-668 Warsaw, Poland
References
  • 1. Y. Kamihara, T. Watanabe, M. Hirano, H. Hosono, J. Am. Chem. Soc. 130, 3296 (2008)
  • 2. Y. Mizuguchi, F. Tomioka, S. Tsuda, T. Yamaguchi, Y. Takano, Appl. Phys. Lett. 93, 152505 (2008)
  • 3. S. Margadonna, Y. Takabayashi, Y. Ohishi, Y. Mizuguchi, Y. Takano, T. Kagayama, T. Nakagawa, M. Takata, K. Prassides, Phys. Rev. B 80, 064506 (2009)
  • 4. G. Garbarino, A. Sow, P. Lejay, A. Sulpice, P. Toulemonde, M. Mezouar, M. Nunez-Regueiro, Europhys. Lett. 86, 27001 (2009)
  • 5. S. Medvedev, T.M. McQueen, I. Trojan, T. Palasyuk, M.I. Eremets, R.J. Cava, S. Naghavi, F. Casper, V. Ksenofontov, G. Wortmann, C. Felser, Nature Mater. 8, 630 (2009)
  • 6. F.-C. Hsu, J.-Y. Luo, K.-W. Yeh, T.-K. Chen, T.-W. Huang, P.M. Wu, Y.-C. Lee, Y.-L. Huang, Y.-Y. Chu, D.-C. Yan, M.-K. Wu, Proc. Natl. Acad. Sci. 105, 14262 (2008)
  • 7. D. Phelan, J.N. Millican, E.L. Thomas, J.B. Leao, Y. Qiu, R. Paul, Phys. Rev. B 79, 014519 (2009)
  • 8. J. Janaki, T. Geetha Kumary, Awadhesh Mani, S. Kalavathi, G.V.R. Reddy, G.V. Narasimha Rao, A. Bharathi, J. Alloys Comp. 486, 37 (2009)
  • 9. T.M. McQueen, Q. Huang, V. Ksenofontov, C. Felser, Q. Xu, H. Zandbergen, Y.S. Hor, J. Allred, A.J. Williams, D. Qu, J. Checkelsky, N.P. Ong, R.J. Cava, Phys. Rev. B 79, 014522 (2009)
  • 10. A.J. Williams, T.M. McQueen, R.J. Cava, Solid State Commun. 149, 1507 (2009)
  • 11. Y. Mizuguchi, F. Tomioka, S. Tsuda, T. Yamaguchi, Y. Takano, J. Phys. Soc. Jpn. 78, 074712 (2009)
  • 12. Z.Q. Liu, A.H. Fang, F.Q. Huang, M.H. Jiang, arXiv:0808.1784v1 (2008)
  • 13. T.-W. Huang, T.-K. Chen, K.-W. Yeh, C.-T. Ke, C.L. Chen, Y.-L. Huang, F.-C. Hsu, M.-K. Wu, P.M. Wu, M. Avdeev, A.J. Studer, arXiv:0907.4001v1 (2009)
  • 14. M.K. Wu, F.C. Hsu, K.W. Yeh, T.W. Huang, J.Y. Luo, M.J. Wang, H.H. Chang, T.K. Chen, S.M. Rao, B.H. Mok, C.L. Chen, Y.L. Huang, C.T. Ke, P.M. Wu, A.M. Chang, C.T. Wu, T.P. Perng, Physica C 469, 340 (2009)
  • 15. B.C. Sales, A.S. Sefat, M.A. McGuire, R.Y. Jin, D. Mandrus, Y. Mozharivskyj, Phys. Rev. B 79, 094521 (2009)
  • 16. R. Khasanov, M. Bendele, A. Amato, P. Babkevich, A.T. Boothroyd, A. Cervellino, K. Conder, S.N. Gvasaliya, H. Keller, H.-H. Klauss, H. Luetkens, E. Pomjakushina, B. Roessli, Phys. Rev. B 80, 140511 (2009)
  • 17. M.D. Lumsden, A.D. Christianson, E.A. Goremychkin, S.E. Nagler, H.A. Mook, M.B. Stone, D.L. Abernathy, T. Guidi, G.J. MacDougall, C. de la Cruz, A.S. Sefat, M.A. McGuire, B.C. Sales, D. Mandrus, arXiv:0907.2417v1 (2009)
  • 18. M.H. Fang, H.M. Pham, B. Qian, T.J. Liu, E.K. Vehstedt, Y. Liu, L. Spinu, Z.Q. Mao, Phys. Rev. B 78, 224503 (2008)
  • 19. R.A. Young, A.C. Larson, C.O. Paiva-Santos, DBWS-9807 Program for Rietveld Analysis, School of Physics, Georgia Institute of Technology, Atlanta 1998
Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv118n225kz
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