Title :
Hydrogen in high-temperature superconducting ceramics
Author :
Dragieva, I. ; Nedkov, I.
Author_Institution :
Higher Inst. of Mech. & Electr. Eng., Sofia, Bulgaria
fDate :
9/1/1990 12:00:00 AM
Abstract :
A technological method of regulating the hydrogen-oxygen content in high-temperature superconducting ceramics by suitable alkali-metal substitutions is presented. The system considered is (Y0.86Ba 1.86M0.7) Cu3O7-y ( M=K, Na, Li). An attempt is made to interpret the amount of hydrogen in the form of hydrides and its effect on the substituted Y ceramics. Some peculiarities in the physical properties of the superconducting ceramics obtained are pointed out
Keywords :
barium compounds; ceramics; hardness; high-temperature superconductors; stoichiometry; yttrium compounds; Y0.86Ba1.86K0.7Cu3O 7-y; Y0.86Ba1.86Li0.7Cu3O 7-7; Y0.86Ba1.86Na0.7Cu3O 7-y; alkali-metal substitutions; ceramics; high temperature superconductors; hydrides; microhardness; physical properties; Ceramics; Conductivity; Heating; High temperature superconductors; Hydrogen; Powders; Superconducting magnets; Superconductivity; Temperature dependence; Yttrium;
Journal_Title :
Magnetics, IEEE Transactions on
