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2003 | 1 | 4 | 626-633
Tytuł artykułu

Surface morphology of PrBa2Cu3O7-δ single crystals after the long-lasting high-temperature reduction

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The results of the detailed scanning electron microscopy study of PrBa2Cu3O7-δ single crystals after the long-lasting high-temperature post-growth treatment are reported. The presence of the unstable decomposition products on the crystal surface indicates that the onset of superconductivity must be related to the structural transformations in the bulk (approximately 20% of the total volume of the examined crystals). The time-dependent character of the superconductivity in the Pr-123 crystals could be attributed to the migration of defects in the Pr−Ba sublattice from the bulk toward the surface.
Słowa kluczowe
Wydawca

Czasopismo
Rocznik
Tom
1
Numer
4
Strony
626-633
Opis fizyczny
Daty
wydano
2003-12-01
online
2003-12-01
Twórcy
  • Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, G. Narutowicza 11/12, 80-952, Gdańsk, Poland, maclu@mif.pg.gda.pl
  • Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, G. Narutowicza 11/12, 80-952, Gdańsk, Poland
Bibliografia
  • [1] A. Kebede, C.S. Jee, J. Schwegler, J.E. Crow, T. Mihalisin, G.H. Myer, R.E. Salomon, P. Schlottmann, M.V. Kuric, S.H. Bloom, and R.P. Guertin: “Magnetic ordering and superconductivity in Y 1−xPrxBa2Cu3O7−y”, Phys. Rev. B, Vol. 40, (1989), pp. 4453–4462. http://dx.doi.org/10.1103/PhysRevB.40.4453[Crossref]
  • [2] M.E. Lopez-Morales, D. Rios-Jara, J. Taguea, R. Escudero, S. La Placa, A. Bezinge, V.Y. Lee, E.M. Engler, and P.M. Grant: “Role of oxygen in PrBa 2Cu3O7−y: Effect on structural and physical properties”, Phys. Rev. B, Vol. 44, (1991), pp. 6655–6667.
  • [3] H.D. Yang and M.W. Lin: “Effects of Zn and Ga substitution on the magnetic properties ofPrBa 2Cu3O7−y”, Phys. Rev. B, Vol. 46, (1992), pp. 5348–5387
  • [4] S.K. Malik, C.V. Tomy, and Parag Bhargava: “Suppression of superconductivity in the oxide systemsR 1−xPrxBa2Cu3O7−y (R=Sm, Gd, and Tm)”, Phys. Rev. B, Vol. 44, (1991), pp. 7042–7045. http://dx.doi.org/10.1103/PhysRevB.44.7042[Crossref]
  • [5] S.K. Malik, S.M. Pattalwar, and C.V. Tomy: “Magnetic-susceptibility and heat-capacity measurements on Pr-richPrBa 2−xPrxCu3O7−y compounds”, Phys. Rev. B, Vol. 46, (1992), pp. 524–527. http://dx.doi.org/10.1103/PhysRevB.46.524[Crossref]
  • [6] H.D. Yang, M.W. Lin, C.K. Chiou, and W.H. Lee: “Magnetic ordering and chain transport ofPrBa 2Cu3O7−y”, Phys. Rev. B, Vol. 46, (1992), pp. 1176–1181. http://dx.doi.org/10.1103/PhysRevB.46.1176[Crossref]
  • [7] H.B. Radousky: “A review of the superconducting and normal state properties ofY 1−xPrxBa2Cu3O7”, Journal of Materials Research, Vol. 7, (1992), pp. 1917–1955.
  • [8] C.H. Booth, F. Bridges, J.B. Boyce, T. Claeson, Z.X. Zhao, and P. Cervantes: “Local disorder in the oxygen environment around praseodymium in Y 1−xPrxBa2Cu3O7 from x-ray-absorption fine structure”, Phys. Rev. B, Vol. 49, (1994), pp. 3432–3442. http://dx.doi.org/10.1103/PhysRevB.49.3432[Crossref]
  • [9] S.K. Malik, W.B. Yelon, J.J. Rhyne, W.J. James, R. Prasad, K. Adhikary, and N.C. Soni: “Structural and magnetic properties of intermediate oxygen stoichiometry ofPrBa 2Cu3Ox”, Solid State Commun., Vol. 89, (1994), pp. 383–387. http://dx.doi.org/10.1016/0038-1098(94)90605-X[Crossref]
  • [10] H.A. Blackstead, John D. Dow, D.B. Chrisey, J.S. Horwitz, M.A. Black, P.J. McGinn, A.E. Klunzinger, and D.B. Pulling: “Observation of superconductivity in PrBa 2Cu3Ox”, Phys. Rev. B, Vol. 54, (1996), pp. 6122–6125. http://dx.doi.org/10.1103/PhysRevB.54.6122[Crossref]
  • [11] Z. Zou, K. Oka, T. Ito, and Y. Nishihara; “Bulk superconductivity in single crystals ofPrBa 2Cu3Ox”, Japanese Journal of Applied Physics Part 2-Letters, Vol. 36, (1997), pp. L18–20. http://dx.doi.org/10.1143/JJAP.36.L18[Crossref]
  • [12] Z. Zou, J. Ye, K. Oka, and Y. Nishihara: “SuperconductingPrBa 2Cu3Ox”, Phys. Rev. Lett., Vol. 80, (1998), pp. 1074–1077. http://dx.doi.org/10.1103/PhysRevLett.80.1074[Crossref]
  • [13] K. Oka, Z. Zou, and J. Ye: “Crystal growth of superconductivePrBa 2Cu3O7−y”, Physica C, Vol. 300, (1998), pp. 200–206. http://dx.doi.org/10.1016/S0921-4534(98)00130-0[Crossref]
  • [14] A. Erb: “The impact of crystal growth, oxygenation and microstructure on the physics of the rare earth (123) superconductors”, Thesis Habilitation, University of Geneva, Switzerland, 1999.
  • [15] M. Łuszek, W. Sadowski, T. Klimczuk, J. Olchowik, B. Susła, and R. Czajka: “Superconductivity in PrBa 2Cu3O7-δ single crystals after high-temperature thermal treatment”, Physica C, Vol. 322, (1999), pp. 57–64. http://dx.doi.org/10.1016/S0921-4534(99)00412-8[Crossref]
  • [16] M. Łuszczek, W. Sadowski, T. Klimczuk, and J. Olchowik: “Structural properties of superconductingPrBa 2Cu3O7-δ single crystals”, Physica C, Vol. 341-348, (2000), pp. 523–524. http://dx.doi.org/10.1016/S0921-4534(00)00573-6[Crossref]
  • [17] F.M. Araujo-Moreira, P.N. Lisboa-filho, S.M. Zanetti, E.R. Leite, and W.A. Ortiz: “Superconductivity in sintered-polycrystallinePrBa 2Cu3O7-δ”, Physica B, Vol. 284–288, (2000), pp. 1033. http://dx.doi.org/10.1016/S0921-4526(99)02374-1[Crossref]
  • [18] H.A. Blackstead, and J.D. Dow: “Implications of superconductivity ofPrBa 2Cu3O7”, Solid State Commun., Vol. 115, (2000), pp. 137–140. http://dx.doi.org/10.1016/S0038-1098(00)00141-1[Crossref]
  • [19] J.D. Dow, and D.R. Harshman: “Explanation of high-temperature superconductivity without cuprate planes”, Philosophical Magazine B-Physics of Condensed Matter, Structural Electronic Optical and Magnetic Properties, Vol. 82, (2002), pp. 1055–1066.
  • [20] M. Łuszczek, and R. Laskowski: “The influence ofPr Ba disorder on the electronic structure ofPrBa 2Cu3O7”, phys. stat. sol. (b), Vol. 230, (2002), pp. R1-R3. http://dx.doi.org/10.1002/1521-3951(200204)230:2<R1::AID-PSSB99991>3.0.CO;2-A[Crossref]
  • [21] M. Park, M.J. Kramer, K.W. Dennis, and R.W. McCallum: “Phase equilibria in the Pr−Ba−Cu−O system under varied oxygen partial pressures”, Physica C, Vol. 259 (1996), pp. 43–53. http://dx.doi.org/10.1016/0921-4534(96)00006-8[Crossref]
  • [22] W. Sadowski, M. Gazda, B. Kusz, T. Klimczuk, M. Łuszczek and J. Olchowik: “Growth and characterization ofPrBa 2Cu3O7-delta single crystals”, Physica C, Vol. 235-240, (1994), pp. 363–364. http://dx.doi.org/10.1016/0921-4534(94)91405-2[Crossref]
  • [23] M. Łuszczek, and W. Sadowski: “Growth and electric transport of Ca-dopedPrBa 2Cu3O7-δ single crystals”, Crystal Research and Technology, Vol. 36, (2001), pp. 917–923. http://dx.doi.org/10.1002/1521-4079(200110)36:8/10<917::AID-CRAT917>3.0.CO;2-B[Crossref]
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_BF02475907
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