Upper Critical Magnetic Field for a Modified Maltifiamental Nb3A1Wire
We measured the upper critical field Μ0Hc2 for a modified Nb3A.l sample above 10 K and evaluated the values using a different criterion. The values from theI c measurement, converting from the ac susceptibility and direct judging from the transition point on the magnetization curve, were close and larger than that extrapolated from the magnetization basedon the theory of Kramer and the critical state model.
Key wordsUpper crotocal field Nb3Al Ic magnetization susceptibility
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