We investigated static and dynamical properties in the three-dimensional percolating Heisenberg antiferromagnets, RbMnc Mg1 - c F3, with the magnetic concentration close to the percolation threshold, cP = 0.312, around the superlattice point well below TN. In neutron diffraction experiment, the wave number dependence of the elastic scattering component was well fitted to q- x. Magnetic fractons were also studied using inelastic neutron scattering, and the observed fractons showed the dispersion relation of qz. The determined exponents, x = 2.43 ± 0.05 and z = 2.5 ± 0.1, were in good agreement with the fractal dimension (Df = 2.48).
- Neutron scattering
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics