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Superconductivity in AgYBa2Cu3O7−y composites

✍ Scribed by M.V. Elashkin; A.A. Zhukov; D.A. Komarkov; V.V. Moshchalkov; I.G. Muttik; N.A. Samarin; V.P. Shabatin; A.Yu. Galkin

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
110 KB
Volume
162-164
Category
Article
ISSN
0921-4534

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✦ Synopsis

The Ag-YBazCu3OT-y composites with the different Ag-volume fraction x were studied. The critical current density jc of the AgzO-based material decreases with x. For the Ag-based material the maximum of the jc(x) dependence at x#20~ seems to be caused by a larger sample density. Measurements of the current-voltage characteristics and the effect of magnetic field on the critical current show that the silver addition changes the type of the intergrain links.

The Ag-YBa2CuaOT-y granular solids with the Ag-volume fraction x ranging from 0 to 50% were fabricated from a single phase YBa2Cu306.s4-powder obtained by a freeze drying technique and an Ag-or AgzO-powders sinthesized by cryo-precipitaring Agz~303 with it's subsequent thermal de-

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