Centro de Física, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas 1010A, Venezuela;Institute for Pure and Applied Physical Sciences, University of California, San Diego, La Jolla, CA 92093, USA
Abstract:
We report EPR and magnetic susceptability measurements in single crystals of Cd1?xMnxSe as a function of concentration and temperature. The data indicate that there is a critical concentration x≈0.22 which we identify with the percolation critical point xc.