Abstract
We report critical-neutron-scattering measurements as a function of concentration and temperature in a crystal of which has a concentration gradient such that spans the percolation threshold . The results are consistent with a multicritical-point description of percolation in magnets and illustrate explicitly the importance of spinspace crossover effects on percolation. We observe no critical scattering associated with the three-dimensional phase transition for .
- Received 26 August 1977
DOI:https://doi.org/10.1103/PhysRevLett.39.894
©1977 American Physical Society