Lower critical field and reversible magn
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Ichiro Matsubara; Ryoji Funahashi; Kazuo Ueno; Hiroshi Yamashita; Tomoji Kawai
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Article
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1996
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Elsevier Science
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English
โ 426 KB
Magnetization measurements have been carried out on Pb doped Bi2SrzCa2Cu30 ~ (Bi-2223) whiskers with the applied field parallel to the c-axis. The temperature dependence of the first flux penetration field Hp can be approximated by Hp(T) = Hp(0)[1 -(T/Tc) 2 ] in the region T> 50 K, while it increase