April 1, 1987
Author(s)
Stephen E. Russek, P. E. Sulewski, A.J. Sievers, H. D. Hallen, D. K. Lathrop, R A. Buhrman
We report on far-infared (FIR) reflectivity measurements on sintered pressed poweder samples of La-Ba-Cu oxide and La-Sr-Cu oxide. THe best samples show fairly sharp transitions to zero measurable resistance with a transition midpoint of 28 K for the Ba