Properties of superconducting, polycrystalline dysprosium-doped Bi{sub 1.6}Pb{sub 0.5}Sr{sub 2-x}Dy{sub x}Ca{sub 1.1}Cu{sub 2.1}O{sub 8+{delta}} (0 {<=} x {<=} 0.5)
- National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019 (India)
- M.E.S. College, Nedumkandam, Kerala 685553 (India)
The structural and superconducting properties of dysprosium (Dy) doped (Bi,Pb)-2212 superconductor have been studied. Dy concentration is varied from x = 0.0 to 0.5 in a general stoichiometry of Bi{sub 1.6}Pb{sub 0.5}Sr{sub 2-x}Dy{sub x}Ca{sub 1.1}Cu{sub 2.1}O{sub 8+{delta}}. It is found that the Dy atoms enter into the crystal structure by replacing Sr atoms and induce significant change in lattice parameter, microstructure, hole-concentration and normal state conductivity of the system. The critical temperature (T{sub C}) and critical current density (J{sub C}) at self-field of the Dy-doped samples enhance considerably at optimum doping levels. Maximum T{sub C} of 92.3 K (for x = 0.4) and J{sub C} of 1390 A/cm{sup 2} at 64 K (for x = 0.2) are observed for doped samples as against 79.4 K and 127 A/cm{sup 2}, respectively, for the pure sample. The results are discussed on the basis of the change in hole-concentration due to Dy-doping at Sr-site of (Bi,Pb)-2212 superconductor.
- OSTI ID:
- 21199757
- Journal Information:
- Materials Research Bulletin, Vol. 44, Issue 5; Other Information: DOI: 10.1016/j.materresbull.2008.11.013; PII: S0025-5408(08)00409-1; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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