Pressure induced helimagnetism in Fe-based (Y2Fe17, Lu2Fe17) intermetallic compounds

Abstract The helimagnetic ground state was induced in the hexagonal Y 2 Fe 17 and Lu 2 Fe 17 intermetallics by hydrostatic pressure above 1.05 and 0.3 GPa, respectively. The observed incommensurate helical structure was characterized by a propagation vector (0 0 τ z ) and by a metamagnetic transition at the critical field H c . The new incommensurate magnetic structure has been revealed now in Lu 2 Fe 17 at magnetic fields above H c at low temperatures. A detailed pressure-temperature-field evolution of the magnetic structures in Y 2 Fe 17 and Lu 2 Fe 17 is presented.