Structural and Magnetic Properties of Fe^sub 2^P under Pressure at Low Temperature

We have carried out X-ray diffraction and ... nuclear forward scattering using synchrotron radiation to study structural and magnetic properties of ... under high pressure at low temperature. The lattice parameter ratio changes at 1.8 and 7.0 GPa as a function of pressure at 24 K without structural change, where the transition at 1.8 GPa corresponds to a ferromagnetic-to-antiferromagnetic one. We deduced the magnetic structures of ... at 3 K and 2.5 GPa from refined hyperfine interaction parameters extracted from ... nuclear forward scattering spectra. Without external magnetic field where ... is in the antiferromagnetic state, the magnetic structure is a complex one with a propagation vector along . The distinct change of ... nuclear forward scattering spectra with external magnetic field along [001] indicates that a metamagnetic-like transition occurs below ... at 3 K and 2.5 GPa. With external magnetic field, the magnetic structures are not simple collinear ones. Furthermore, the magnetic-field-induced change in the magnetic structure occurs at around ... (ProQuest: ... denotes formulae/symbols omitted.)