Summary
Bulk slabs of sintered YBCO were irradiated with monoenergetic protons at different energies (3.5 and 6.5 MeV) and different fluences, ranging from 1.8·1016 to 8.6·1016 p/cm2. The effects on intergrain critical currents of protons crossing the sample and the effects of protons implanting in the specimen, has been studied by means of a.c. susceptibility characterizations. D.c. hysteresis cycles were measured in low fields in order to investigate the modifications in the intergrain critical current density due to proton implantation. The main result is the evidence that the intergrain J c response to the applied field can be modulated by means of the proton irradiation. Resistive measurements were also performed in order to investigate the complex transport phenomena in polycrystalline materials. Irradiation-induced effects on both superconducting- and normal-state resistivity are studied. The addition of extrinsic defects can lead to enhanced transport properties, emerging especially when a magnetic field is applied.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
S. E. Babcock and D. C. Larbalestier: J. Mater. Res., 5, 919 (1990); S. Babcock: MRS Bull., 17, 20 (1992).
M. A. Kirk: Cryogenics, 33, 235 (1993).
R. B. van Dover et al.: Advances in High Temperature Superconductivity (I.S.I., Torino, 1991), p. 198.
E. Mezzetti, F. Abbattista, D. Andreone, R. Cherubini, R. Gerbaldo, B. Minetti, F. Periale and M. Vallino: J. Supercond., 6, 237 (1993).
J. Halbritter: Phys. Rev. B, 46, 14861 (1992).
J. Halbritter: Phys. Rev. B, 48, 9735 (1993).
E. Mezzetti, S. Colombo, R. Gerbaldo, G. Ghigo, L. Gozzelino, B. Minetti, R. Cherubini and D. Zafiropoulos: to be published in J. Supercond.
E. Mezzetti, S. Colombo, R. Gerbaldo, G. Ghigo, B. Minetti and R. Cherubini: Proceedings of the VII IWCC (1994), edited by H. W. Weber (World Scientific, 1994), p. 299.
V. Calzona, M. R. Cimberle, C. Ferdeghini, M. Putti and A. Siri: Physica C, 157, 425 (1989).
R. Fehrenbacher, V. B. Geshkenbein and G. Blatter: Phys. Rev. B, 45, 5450 (1992).
E. Sarnelli, P. Chaudhari, M. Daumling and J. A. Lacey: IEEE Trans. Appl. Supercond., 3, 2329 (1993).
J. W. Ekin et al.: Physica C, 160, 489 (1989).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Mezzetti, E., Colombo, S., Gerbaldo, R. et al. Modulation of HTSC characteristics induced by proton irradiation. Il Nuovo Cimento D 16, 1933–1939 (1994). https://doi.org/10.1007/BF02462196
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02462196
PACS
PACS
PACS
- 74.60.Mj
- Material effects on T c, κ, critical currents (including impurities, ion implantation, etc.)