Reptation effects in particulate systems. II: Experimental studies

In this paper we report the results of experimental reptation measurements on a chromium dioxide videotape sample. The reptation‐induced changes in magnetization are found to be due entirely to thermally activated reversals which are strongly influenced by the sweep rate of the cycling applied field. This experimental evidence is found to be in exact agreement with the theoretical predictions of sweep‐rate‐dependent time‐dependence and reptation effects published in the preceding article [El‐Hilo et al. (these proceedings)].