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News Link • Science, Medicine and Technology

Superconductivity Established Near 20C

• arclein
In eight magnetization tests a small amount of the compound (Tl5Pb2)Ba2MgCu10O17+ consistently produced sharp diamagnetic transitions (the Meissner effect) near 20 Celsius (see above graphic), and resistive transitions that appeared near 18.5C (see below right). These temperatures are believed accurate +/- 2 degrees.

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