FIELD: manufacture of superconducting materials. SUBSTANCE: ferrite of bivalent metal chosen from group of Zn, Mg, Ni, Co and Zn is treated in planetary mill for 0.05-1.0 hour at current density of 15-40 W/g. EFFECT: simplified manufacture process, decreased power-consuming. 1 tbl
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Authors
Dates
1994-02-28—Published
1990-04-04—Filed