Magnetic flux motion in (PrxY1−x)Ba2Cu3O7−δ polycrystal samples sintered in Ar and O2 atmospheres
Source abstract
Abstract
We present a comparative study of the magnetic flux motion in ceramic pellets made of (PrxY1−x)Ba2Cu3O7−δ as a function of their composition and morphology. Samples produced in Ar or O2 atmosphere present noticeable differences in their magnetic response that we explain in terms of their structural parameters. The material’s parameters that most influence the flux dynamics are morphology and oxygen content, that change dramatically with the sintering atmosphere. Moderate changes are also observed as a function of the Pr content. Magnetic pinning efficiency is discussed in terms of intergranular couplings and effective activation energies, estimated from AC-susceptibility and magnetoresistance measurements.
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Research context
OpenAlex topics: Physics of Superconductivity and Magnetism · Magnetic and transport properties of perovskites and related materials · Advanced Condensed Matter Physics
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Affiliations
Facultad de Ciencias (Universidad de la República) 1 Instituto de Física, , Iguá 4225, 11400 Montevideo, Uruguay
Facultad de Ingeniería (Universidad de la República) 2 Instituto de Física, , Herrera y Reissig 565, C.C. 30, 11000 Montevideo, Uruguay
Funding
ANII · PEDECIBA-Física
References (35)
Show source-provided references
1. Superconductivity in PrBa2Cu3O710.1016/0375-9601(95)00653-K ↗
2. Superconducting PrBa2Cu3Ox10.1103/PhysRevLett.80.1074 ↗
3. Superconductivity in sintered-polycrystalline PrBa2Cu3O7-d10.1016/S0921-4526(99)02374-1 ↗
4. Effect of praseodymium substitution on the growth and properties of Y1-xPrxBa2Cu3O7-d (0 < x < 0.4) single crystals10.1007/BF02745151 ↗
5. Phase fluctuation of Pr and Ca doped YBa2Cu3O7-d compounds in a microscopic area10.1142/S0217984995001595 ↗
6. C-axis hopping conductivity in heavily Pr-doped YBCO single crystals10.1088/0953-2048/26/8/085017 ↗
7. Some investigations on praseodymium-substituted Yttrium Barium Copper Oxide10.1002/pssa.2211200229 ↗
8. Pr substitution at Y and Ba sites in YBCO (123) System
9. Structure stability of optimally-praseodymium-doped-123-Y0. 85Pr0. 15Ba2Cu3O7 superconductor
10. Local disorder in the oxygen environment around praseodymium in Y 1-x PrxBa2Cu3O7 from x-ray-absorption fine structure10.1103/PhysRevB.49.3432 ↗
11. Transport properties of PBCO thin films on (110)/(001) RBCO single crystal substrates10.1007/978-4-431-66879-4_254 ↗
12. Phys. Rev. Lett · 1990 · 67 · 80410.1103/PhysRevLett.64.804 ↗
13. Charge-fluctuation effect on the critical temperature of layered high-Tc superconductors10.1103/PhysRevB.43.344 ↗
14. Superconductivity and quantum fluctuations in high Tc alloys and multilayers10.1016/0921-4526(94)91685-3 ↗
15. Depression of the zero-temperature superfluid density in YBa2Cu3O7/PrBa2Cu3O7 heterostructures10.1016/0921-4534(94)92122-9 ↗
16. Highly textured PrxY1-xBa2Cu3O7-d polycrystalline ceramics sintered in Ar atmosphere10.1016/j.matchemphys.2015.02.008 ↗
17. Solid State Communications · 1989 · 69 · 36710.1016/0038-1098(89)90689-3 ↗
18. Frequency and field dependence of the irreversibility line in a YBa2Cu3 O7-d film10.1016/0921-4534(90)90586-4 ↗
19. AC susceptibility study of YBCO thin film and BSCCO bulk superconductors10.1016/j.jmmm.2003.12.1311 ↗
20. AC susceptibility of structured YBa2Cu3O7 thin films in transverse magnetic ac fields10.1103/PhysRevB.55.11816 ↗
21. AC susceptibility of high temperature superconductors in a critical state model10.1016/0921-4534(89)90143-3 ↗
22. Frequency dependence of ac susceptibility in high-temperature superconductors: Flux creep and critical state at grain boundaries
23. Phys. Rev. B · 1995 · 52 · 132010.1103/PhysRevB.52.1320 ↗
24. Radio-frequency complex-impedance measurements on thin film two-dimensional superconductors
25. Magnetic ordering and superconductivity in Y1-xPrxBa2Cu3O7-y10.1103/PhysRevB.40.4453 ↗
26. AC absorption in the high-T c superconductors: Reinterpretation of the irreversibility line10.1103/PhysRevB.43.3748 ↗
27. Superconductivity: A guide to alternating current susceptibility measurements and alternating current susceptometer design10.1119/1.17770 ↗
28. Dissipative flux motion in high-temperature superconductors10.1103/PhysRevB.41.6621 ↗
29. Characterisation of argon-ion-bombarded and chemically etched Y1Ba2Cu3O7-d single crystal surfaces10.1016/0921-4534(93)90170-U ↗
30. Site-specific and doping-dependent electronic structure of YBa2Cu3Ox probed by O 1s and Cu 2p x-ray-absorption spectroscopy10.1103/PhysRevB.51.8529 ↗
31. AC susceptibility and intergranular critical current density of high Tc superconductors10.1016/0011-2275(89)90153-7 ↗
32. Resistive states in hard superconductors10.1103/PhysRevLett.8.250 ↗
33. Enhanced superconducting performance of melt quenched Bi2Sr2CaCu2O8 (Bi-2212) superconductor10.1016/j.matchemphys.2013.02.016 ↗
34. Flux-line-cutting losses in type-II superconductors10.1103/PhysRevB.26.2463 ↗
35. Resistive transition of high-temperature superconductors10.1103/PhysRevLett.61.1658 ↗