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MAGNETIC PROPERTIES OF TYPE II SUPERCONDUCTORS AT LOW TEMPERATURE |
DAI Wenmin Beijing University of Iron and Steel Technology |
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Cite this article:
DAI Wenmin Beijing University of Iron and Steel Technology. MAGNETIC PROPERTIES OF TYPE II SUPERCONDUCTORS AT LOW TEMPERATURE. Acta Metall Sin, 1985, 21(4): 45-56.
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Abstract The penetration depth λ(T),coherent length ξ(T),high critical field H_(c2)(T)andcoefficients k_1(T)and k_2(T)of the type II superconductors at low temperature werecalculated by the generalized G-L equations.An expression of the structure of avortex line at low temperature was derived.The lower critical field H_(c1)(T)was eval-uated by some simplified assumptions.The effect of the impurities on λ,ξ,k_1,k_2and H_(c1)was also discussed.After the calculation,it shows that the Werthamer'sand Wang's equations are no longer valid while the applied field H_0 approachesto H_(c2)(T)at low temperature.
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Received: 18 April 1985
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1 #12 2 #12 3 #12 4 Werthamer,N.R.,Phys.Rev.,123(1963) ,663. 5 王竹溪,未发表资料,1973. 6 Caroli,C.,Phys.Lett.,9(1964) ,307. 7 Maki,K.;Tsuzuki,T.,Phys.Rev.,139(1965) ,A868 McConville,T.;Serin,B.,Phys.Rev.,140(1965) ,A1169. |
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