Summary
We have studied the effects of 235 MeV197Au ion implantation on critical current density, creep rate and irreversibility line of YBCO melt-textured bulk samples. The fluence was 1.25·1011 ions/cm2, corresponding to a dose equivalent field of 2.5 T. We created two surface layers with correlated defects on the opposite sides of the sample, in such a way that the irradiated part was about 13% of the total volume. Such a surface irradiation caused a quite large widening of the irreversibility region in theB-T phase diagram. Critical current enhancements —having different behaviours as a function of field in different temperature ranges and reaching more pronounced values at higher temperatures and fields—were found.
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Hardy V., Groult D., Hervieu M., Provost J. andRaveau B.,Nucl. Instrum. Methods B,54 (1991) 472.
Safar H., Riley G. N., Thompson J. R. andKrusim Elbaum L.,Appl. Phys. Lett.,67 (1995) 130.
Krusin-Elbaum L., inProceedings of IV ECerS, Fourth Euro-Ceramics Conference. Riccione (Italy) 1995, edited byA. Barone, D. Fiorani andA. Tampieri, Vol.7 (Gruppo Editoriale Faenza Edit.) 1995, p. 321.
Abbattista F., Albanese R., Vallino M., Gerbaldo R., Ghigo C., Gozzelino L., Mezzetti E., Minetti B. andMossolov A. B., inApplied Superconductivity 1995, edited byD. Dew-Hughes Inst. Phys. Conf. Ser.,148 (IOP Publishing, Bristo) 1995, p. 543.
Hardy V., Provost J., Groult D., Simon Ch., Hervieu M. andRaveau B.,J. Alloys Compounds,195 (1993) 395.
Gyorgy E. M., van Dover R. B., Jackson K. A., Schneemeyer L. F. andWaszczak J. V.,Appl. Phys. Lett.,55 (1989) 283.
Mezzetti E., Colombo S., Gerbaldo R., Ghigo G., Gozzelino L., Minetti B., Cherubini R. andWisniewski A., inProceedings of IV ECerS, Fourth Euro-Ceramics Conference, Riccione (Italy) 1995, edited byA. Barone, D. Fiorani andA. Tampieri, Vol.7 (Gruppo Editoriale Faenza Edit.) 1995, p. 349.
Itzler M. A. andTinkham M.,Phys. Rev. B,51 (1995) 435.
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Mezzetti, E., Cherubini, R., Gerbaldo, R. et al. Enhanced vortex pinning in melt-textured YBCO by means of gold-ion-induced defects. Il Nuovo Cimento D 18, 1099–1103 (1996). https://doi.org/10.1007/BF02457675
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DOI: https://doi.org/10.1007/BF02457675