Author/Authors :
Calatroni، نويسنده , , S. and Casalbuoni، نويسنده , , S. and Czapek، نويسنده , , G. L. Ebert، نويسنده , , T. and Hasenbalg، نويسنده , , F. and Hauser، نويسنده , , M. and Janos، نويسنده , , S. and Kainer، نويسنده , , K.U and Knoop، نويسنده , , K.M. and Moser، نويسنده , , U. and Palmieri، نويسنده , , V.G. and Pretzl، نويسنده , , K. and Sahli، نويسنده , , B. and Sgobba، نويسنده , , S. and Vollenberg، نويسنده , , W. and Wyss، نويسنده , , Ch.P.، نويسنده ,
Abstract :
A considerably improved phase transition homogeneity was observed with superheated superconducting Sn spheres as a result of laser melting and fast cooling. These spheres exhibited a very homogeneous phase transition behaviour independent of the orientation of the spheres with respect to the direction of the external magnetic field. Compared to previously untreated Sn spheres the spread of the phase transition boundaries was reduced by almost an order of magnitude. In addition, we studied mass production of Sn structures using vacuum evaporation and deposition. First encouraging results are reported.
