Magnetic phase diagram of the solid solution

The magnetic phase diagram of the solid solution (-type crystal structure) has been established based on neutron diffraction data collected for seven intermediate compositions and supplemented by magnetometric data. Collinear antiferromagnetic structures described by the wave vectors [0,0,1], [1/2,1/2,1/2] and [1/2,1/2,0] develop successively as the Ru concentration denoted by the index x rises from 0 to 0.75, followed by antiferromagnetic sine modulated structures with wave vectors , and observed in the concentration range 0.5 < x < 2.