Magnetic, thermoelectric and structural properties of HfV_2 under high magnetic fields and high pressure

Magnetic susceptibility χ, electrical resistivity ρ, thermoelectric power (Seebeck coefficient) S and X-ray diffraction (XRD) measurements of Laves phase compound HfV_2 were measured in the temperature T range from 4.2 to 300 K under magnetic fields B up to 17 T and pressures P up to 1.2 GPa. The data of χ and ρ show a hysteresis for 50 < T < 110 K, and S shows anomalies in the vicinity of 50 K and 100 K. The full width at half maximum of XRD peak increases rapidly for 50 ≤ T ≤ 110 K. The results obtained indicate that the structural transformation occurs in this temperature range and affects the magnetic, thermoelectric and structural properties