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Funct. Mater. 2017; 24 (4): 527-529.


Single-file diffusion in oxygen underdoped ReBa2Cu3O7-x (Re=Y, Ho) single crystals

Y.I.Boiko, V.V.Bogdanov, R.V.Vovk, A.G.Ort, Yu.V.Litvinov

V.Karazin Kharkiv National University,4 Svobody Sq., 61022 Kharkiv, Ukraine


Analysis of the kinetics of relaxation processes observed at room temperature in the ReBa2Cu3O7-x (Re=Y, Ho) compounds, having a high-temperature superconductivity is made. It was concluded that the initial (faster) stage of these processes is controlled by a single-file diffusion of oxygen along one-dimensional chains of vacancies, forming in the oxygen sub-lattice of compound with a deficit of oxygen, and final (slow) stage controls by the usual classical diffusion. Presented and discussed the results of two-stage relaxation of the electrical resistance of above mentioned compounds which were a long time (more than three days) at room temperature in air.

ReBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub> single crystals, oxygen vacancies, annealing processes, diffusion mechanism.

1. A.L.Solovyov, L.V.Omelchenko, V.B.Stepanov et al., Phys. Rev. B, 94, 224505 (2016). https://doi.org/10.1103/PhysRevB.94.224505

2. F.Esch, S.Fabris, L.Zhou et al., Science, 309, 752 (2005). https://doi.org/10.1126/science.1111568

3. D.M.Ginsberg (ed.), Physical Properties High Temperature Superconductors I, Word Scientific, Singapore (1989).

4. K.V.Mitsen, O.M.Ivanenko, Pisma v Zh. Eksperiment. Teor. Fiz. 82, 129 (2005).

5. D.D.Balla, A.V.Bondarenko, R.V.Vovk et al., Low Temp. Phys., 23, 777 (1997). https://doi.org/10.1063/1.593445

6. R.V.Vovk, N.R.Vovk, O.V.Dobrovolskiy, J. Low Temp. Phys., 175, 614 (2014). https://doi.org/10.1007/s10909-014-1121-9

7. Y.I.Boiko, V.V.Bogdanov, G.Ya.Khadzhai et al., Low Temp. Phys., 42, 936 (2016). https://doi.org/10.1063/1.4965896

8. K.Hahn, J.Karger, V.Kukla, Phys. Rev. Lett., 76, 2762 (1996). https://doi.org/10.1103/PhysRevLett.76.2762

9. M.A.Obolenskii, R.V.Vovk, A.V.Bondarenko, N.N.Chebotaev, Low Temp. Phys., 32, 571 (2006). https://doi.org/10.1063/1.2215373

10. R.Malkovich, Mathematics of Diffusion in Semiconductors, Nauka, St. Petersburg (1999) [in Russian].

11. R.V.Vovk, G.Ya.Khadzhai, O.V.Dobrovolskiy, Appl. Phys. A, 117, 997 (2014). https://doi.org/10.1007/s00339-014-8670-2

12. R.V.Vovk, C.D.H.Williams, A.F.G.Wyatt, Phys. Rev. B, 68, 134508 (2003). https://doi.org/10.1103/PhysRevB.68.134508

13. R.V.Vovk, C.D.H.Williams, A.F.G.Wyatt, Phys. Rev. Lett., 91, 235302 (2003). https://doi.org/10.1103/PhysRevLett.91.235302

14. A.V.Bondarenko, V.A.Shklovskij, R.V.Vovk et al., Low Temp. Phys., 23, 962 (1997). https://doi.org/10.1063/1.593511

15. R.V.Vovk, G.Ya.Khadzhai, I.L.Goulatis, A.Chroneos, Physica B, 436, 88 (2014). https://doi.org/10.1016/j.physb.2013.11.056

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