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VOLUME 38 (1983) | ISSUE 4 | PAGE 191
Twinning-induced increase in the superconducting transition temperature of tin
The superconductivity of specimens of pure tin, containing a large number of microscopic twins, is investigated. It is established that the critical temperature of a large number of sections of twinning planes increases considerably due to a weakening of the proximity effect as a result of close positioning of twins. Specimens in which the superconductivity appears at a temperature twice as high as the usual critical temperature of tin are obtained.