NONLINEAR SUSCEPTIBILITY OF 2D SPIN-GLASS FILMS

A careful study of the nonlinear susceptibility of multilayered two-dimensional Cu(14 at% Mn) spin glass layers separated by thick interlayers of Cu is reported. The experiments were performed in SQUID magnetometers using an ac susceptibility technique in the field range 0-0.5 kG and dc magnetization measurements in the field range 0-10 kG. The static 2D critical exponents have been determined from scaling analyses.
INTERNATIONAL CONF ON MAGNETISM, EDINBURGH, SCOTLAND, SEP 02-06, 1991