Magnetic neutron white beam diffraction through phase transitions in MnRhAs

Abstract Analysis of the distribution of intensities in the neutron Laue pattern from MnRhAs single crystals at 155±1K, shows additional magnetic phases coexisting with the known antiferro (AF 2 ) and the ferromagnetic (f) phases. The set of propagation vectors for the new reflections of the well ordered phase shows a true new commensurate phase (AF 3 ), q = [0, 0, 1 6 ]. Between these new reflections a magnetic diffusion is associated with a not so good long range ordered state.