EFFECT OF GAMMA-IRRADIATION ON PURE AND SILVER-DOPED YBCO SUPERCONDUCTOR

ALBISS B., HAMDAN N., MENARD A., OZKAN H.

SOLID STATE COMMUNICATIONS, vol.88, no.3, pp.237-240, 1993 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 88 Issue: 3
  • Publication Date: 1993
  • Doi Number: 10.1016/0038-1098(93)90749-d
  • Journal Name: SOLID STATE COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.237-240
  • Middle East Technical University Affiliated: No

Abstract

Specimens of high-T(c) superconductors, YBCO and (YBCO)1.96 Ag0.04, were irradiated with gamma-rays up to an integrated dose of 77 MR. Electrical resistance vs temperature and the X-ray diffraction patterns of the monolayers of the sample powders were obtained before and after the irradiations. The normal state resistance of the pure and Ag-doped YBCO specimens gradually increase as the gamma-dose increases. The intensities of the X-ray diffraction peaks of the monolayers of the YBCO powders decrease with gamma-irradiation without significant change of diffraction angles or peak widths. The zero resistance transition temperature of the Ag-doped YBCO specimens decreases by about 0.5% with gamma-irradiation at 77 MR. These observations indicate that the high-T(c) superconductor YBCO is quite sensitive to gamma-irradiation but drastic lattice expansion does not occur up to a gamma-dose of 77 MR.