This article is cited in 3 papers

Special issue devoted to the memory of academician A M Prokhorov

Enhancement of the critical current density in HTSC ceramics by laser radiation

G. N. Mikhailova, A. V. Troitskii

Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow

Abstract: The experimental data on the application of laser radiation to melting YBCO(123) and Bi(2223) high-temperature superconducting ceramics aimed at the improvement of their structure and an increase in the critical current density are systematised. The short-term melting of this ceramics by CO₂ laser radiation and the subsequent annealing lead to the formation of a dense fine-grained structure. As a result, the critical current density significantly increases. The best results are obtained for the Bi(2223) ceramics: the critical current density increases by a factor of 40 and 8 at T= 20 K and 77 K, respectively.

PACS: 74.72.Bk, 74.72.Hs, 74.25.Sv, 42.55.Lt

Received: 23.01.2003

 English version: Quantum Electronics, 2003, 33:7, 621–627

Bibliographic databases:

•