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|Type:||Artigo de periódico|
|Title:||Critical Current Study Using Ac Susceptibility Measurements In Er Ba2cu3o7-δ Crystal Showing The Fishtail Effect|
De Lima O.F.
|Abstract:||Different χac measurements can be collapsed into a single curve if plotted against the ac penetration depth δ = h/Jd. Further, using this scaling law, it is possible to obtain the frequency dependence of the shielding current density J(ν, B, T). In this work, this scaling relation was tested for a Er Ba2Ou3O7-δ single crystal. The frequency dependence of J(ν, B, T) displays a behavior closely related with the second magnetization peak ("fishtail effect") observed in M × H curves. This result supports a dynamical interpretation for the fihtail effect. © 2000 Elsevier Science B.V. All rights reserved.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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